diff --git a/src/components/expr2.vue b/src/components/expr2.vue
index 878c8db..d175486 100644
--- a/src/components/expr2.vue
+++ b/src/components/expr2.vue
@@ -15,10 +15,15 @@ provide("disk",new Disk());
         <DISK/>
         <OperationGraph/>
     </div>
-    <OperationTable/>
+    <div id="operation-table">
+        <OperationTable/>
+    </div>
 
 </template>
 
 <style scoped>
-
+#operation-table
+{
+    width: 50vw;
+}
 </style>
\ No newline at end of file
diff --git a/src/components/expr2/DISK.vue b/src/components/expr2/DISK.vue
index 6b22cbc..660a897 100644
--- a/src/components/expr2/DISK.vue
+++ b/src/components/expr2/DISK.vue
@@ -6,7 +6,16 @@ import {storeToRefs} from "pinia";
 import useExpr2Store from "@/store/expr2/expr2Store.ts";
 //18 <-> -12
 const duration = 1, animationCount = 40;
-const {currentTrack, trackCount, trackFromIndex, trackToIndex, operations, startTrack,selectTrackFromIndex,selectTrackToIndex} = storeToRefs(useExpr2Store());
+const {
+    currentTrack,
+    trackCount,
+    trackFromIndex,
+    trackToIndex,
+    operations,
+    startTrack,
+    selectTrackFromIndex,
+    selectTrackToIndex
+} = storeToRefs(useExpr2Store());
 const degree = computed(() =>
     6 - (currentTrack.value / trackCount.value * (30) - 12)
 );
@@ -17,17 +26,16 @@ const cssVars = computed(() => {
 });
 const trackDelta = computed(() => {
     let start = trackFromIndex.value === -1 ? startTrack.value : operations.value[trackFromIndex.value].track;
-    let end = trackToIndex.value === -1 ? startTrack.value : operations.value[trackToIndex.value].track;
+    let end = trackToIndex.value === -1 ? startTrack.value : (trackToIndex.value >= operations.value.length ? 0 : operations.value[trackToIndex.value].track);
     return end - start;
 });
-const selectTrackSum = computed(()=>{
-    if(selectTrackFromIndex.value === selectTrackToIndex.value)
+const selectTrackSum = computed(() => {
+    if (selectTrackFromIndex.value === selectTrackToIndex.value)
         return 0;
     let t = 0;
-    let last = selectTrackFromIndex.value === -1? selectTrackToIndex.value: operations.value[selectTrackFromIndex.value].track;
-    console.log(selectTrackFromIndex.value,selectTrackToIndex.value,t);
-    for(let i = Math.max(0,selectTrackFromIndex.value);i<=selectTrackToIndex.value;i++)
-    {
+    let last = selectTrackFromIndex.value === -1 ? startTrack.value : operations.value[selectTrackFromIndex.value].track;
+    console.log(selectTrackFromIndex.value, selectTrackToIndex.value, t);
+    for (let i = Math.max(0, selectTrackFromIndex.value); i <= selectTrackToIndex.value; i++) {
         console.log(operations.value[i].track);
         t += Math.abs(operations.value[i].track - last);
         last = operations.value[i].track;
@@ -122,6 +130,7 @@ watch(degree, (newDeg) => {
     top: 396px;
     left: 210px;
 }
+
 #track-sum {
     z-index: 2;
     position: absolute;
diff --git a/src/components/expr2/OperationTable.vue b/src/components/expr2/OperationTable.vue
index 44590db..1fbd0cc 100644
--- a/src/components/expr2/OperationTable.vue
+++ b/src/components/expr2/OperationTable.vue
@@ -2,7 +2,7 @@
 
 import {storeToRefs} from "pinia";
 import {Input} from "tdesign-vue-next";
-import {computed} from "vue";
+import {Ref, ref, watch} from "vue";
 import useExpr2Store from "@/store/expr2/expr2Store.ts";
 import {Operation} from "@/store/expr2/defaultOperation.ts";
 
@@ -16,17 +16,32 @@ let {
     trackFromIndex,
     trackToIndex,
     selectTrackFromIndex,
-    selectTrackToIndex
+    selectTrackToIndex,
+    tableUpdate
 } = storeToRefs(expr2Store);
-let data = computed(() => {
-    console.log(startTrack.value);
-    return [{track: startTrack.value, id: 0}, ...operations.value].map((operation: Operation, index: number) => {
+let data: Ref<{ key: string, id: number, track: number }[]> = ref<{
+    key: string,
+    id: number,
+    track: number
+}[]>([{track: startTrack.value, id: 0}, ...operations.value].map((operation: Operation, index: number) => {
+    return {
+        key: String(index + 1),
+        id: operation.id,
+        track: operation.track,
+    }
+}));
+
+watch(tableUpdate, (newVal) => {
+    if (newVal === false)
+        return;
+    data.value = [{track: startTrack.value, id: 0}, ...operations.value].map((operation: Operation, index: number) => {
         return {
             key: String(index + 1),
             id: operation.id,
             track: operation.track,
         }
     });
+    tableUpdate.value = false;
 });
 let beforeKey = -1;
 let beforeFromKey = -1;
@@ -158,14 +173,28 @@ function ActiveChange(rows: string[]) {
         return;
     selectTrackFromIndex.value = parseInt(rows[0]) - 2;
     selectTrackToIndex.value = parseInt(rows[rows.length - 1]) - 2;
+    if (selectTrackToIndex.value === selectTrackFromIndex.value) {
+        if (selectTrackFromIndex.value >= 0 && selectTrackFromIndex.value < operations.value.length)
+            beforeKey = operations.value[selectTrackFromIndex.value].track;
+        else if (selectTrackFromIndex.value === -1)
+            beforeKey = startTrack.value;
+        else
+            beforeKey = currentTrack.value;
+    }
 }
 
 // row Error
 function InsertBefore(row: number) {
-    originOperations.value.splice(row - 1, 0, {
-        id: 0,
-        track: -1
-    });
+    if (row === 1)
+        originOperations.value.splice(0, 0, {
+            id: 0,
+            track: -1
+        });
+    else
+        originOperations.value.splice(row - 2, 0, {
+            id: 0,
+            track: -1
+        });
     tableChanged.value = true;
 }
 
@@ -179,7 +208,9 @@ function InsertEnd() {
 
 // row Error
 function Delete(row: number) {
-    originOperations.value.splice(row - 1, 1);
+    let key = data.value[row - 1].key;
+    let index = FindOriginOperationIndex(key);
+    originOperations.value.splice(index, 1);
     tableChanged.value = true;
 }
 
diff --git a/src/logical/expr2/disk.ts b/src/logical/expr2/disk.ts
index 2457708..3f9b8b6 100644
--- a/src/logical/expr2/disk.ts
+++ b/src/logical/expr2/disk.ts
@@ -20,7 +20,8 @@ export class Disk {
             trackCount,
             failInfo,
             tableChanged,
-            dataChanged
+            dataChanged,
+            tableUpdate
         } = storeToRefs(useExpr2Store());
         watch(tableChanged, (newVal) => {
             if(newVal === false)
@@ -46,6 +47,7 @@ export class Disk {
                 }
             }
             dataChanged.value = true;
+            tableUpdate.value = true;
             tableChanged.value = false;
         });
     }
@@ -77,7 +79,7 @@ export class Disk {
         let track = FindTrack();
         ans.push(operations[track])
         set.add(track);
-        //O(n)
+        //O(n^2)
         while (set.size < operations.length) {
             let candidate: number[] = [];
 
@@ -99,14 +101,16 @@ export class Disk {
                 }
             }
             let min = Number.MAX_VALUE;
+            let targetTrack = 0;
             for (let t of candidate) {
                 if (Math.abs(operations[t].track - operations[track].track) < min) {
                     min = Math.abs(operations[t].track - operations[track].track);
-                    track = t;
+                    targetTrack = t;
                 }
             }
-            ans.push(operations[track]);
-            set.add(track);
+            ans.push(operations[targetTrack]);
+            set.add(targetTrack);
+            track = targetTrack;
         }
         return ans;
     }
diff --git a/src/store/expr1/defaultOperation.ts b/src/store/expr1/defaultOperation.ts
index 8c4c509..552c6e2 100644
--- a/src/store/expr1/defaultOperation.ts
+++ b/src/store/expr1/defaultOperation.ts
@@ -1,14 +1,28 @@
+// const operations: Operation[] = [
+//     { id: 1, memorySize: 200, type: 'request' },
+//     { id: 2, memorySize: 200, type: 'request' },
+//     { id: 3, memorySize: 300, type: 'request' },
+//     { id: 4, memorySize: 200, type: 'request' },
+//     { id: 5, memorySize: 100, type: 'request' },
+//     { id: 1, memorySize: 200, type: 'release' },
+//     { id: 3, memorySize: 300, type: 'release' },
+//     { id: 5, memorySize: 100, type: 'release' },
+//     { id: 6, memorySize: 50, type: 'request' },
+// ];
 const operations: Operation[] = [
-    { id: 1, memorySize: 200, type: 'request' },
-    { id: 2, memorySize: 200, type: 'request' },
-    { id: 3, memorySize: 300, type: 'request' },
+    { id: 0, memorySize: 40, type: 'request' },
+    { id: 1, memorySize: 130, type: 'request' },
+    { id: 2, memorySize: 60, type: 'request' },
+    { id: 3, memorySize: 100, type: 'request' },
+    { id: 2, memorySize: 60, type: 'release' },
     { id: 4, memorySize: 200, type: 'request' },
-    { id: 5, memorySize: 100, type: 'request' },
-    { id: 1, memorySize: 200, type: 'release' },
-    { id: 3, memorySize: 300, type: 'release' },
-    { id: 5, memorySize: 100, type: 'release' },
-    { id: 6, memorySize: 50, type: 'request' },
-];
+    { id: 3, memorySize: 100, type: 'release' },
+    { id: 1, memorySize: 130, type: 'release' },
+    { id: 5, memorySize: 140, type: 'request' },
+    { id: 6, memorySize: 60, type: 'request' },
+    { id: 7, memorySize: 50, type: 'request' },
+    { id: 6, memorySize: 60, type: 'release' },
+    ];
 export default operations;
 export interface Operation {
     id: number;
diff --git a/src/store/expr1/expr1Store.ts b/src/store/expr1/expr1Store.ts
index 4d71869..94dcaa0 100644
--- a/src/store/expr1/expr1Store.ts
+++ b/src/store/expr1/expr1Store.ts
@@ -4,7 +4,7 @@ import operations from '@/store/expr1/defaultOperation.ts'
 const useExpr1Store = defineStore('expr1', {
     state: () => ({
         operations: operations,
-        memSize: 1000,
+        memSize: 640,
         currentState: operations.length,
         tableChanged: false,
         failInfo: ''
diff --git a/src/store/expr2/defaultOperation.ts b/src/store/expr2/defaultOperation.ts
index d6d67d2..1843c82 100644
--- a/src/store/expr2/defaultOperation.ts
+++ b/src/store/expr2/defaultOperation.ts
@@ -1,13 +1,11 @@
 const operations: Operation[] = [
-    {id: 1, track: 80},
+    {id: 1, track: 90},
     {id: 2, track: 60},
-    {id: 3, track: 90},
-    {id: 4, track: 70},
-    {id: 5, track: 10},
-    {id: 6, track: 30},
-    {id: 7, track: 20},
-    {id: 8, track: 99},
-    {id: 9, track: 50},
+    {id: 3, track: 10},
+    {id: 4, track: 30},
+    {id: 5, track: 20},
+    {id: 6, track: 99},
+    {id: 7, track: 50},
 ];
 export default operations;
 
diff --git a/src/store/expr2/expr2Store.ts b/src/store/expr2/expr2Store.ts
index 7587bae..ba7244b 100644
--- a/src/store/expr2/expr2Store.ts
+++ b/src/store/expr2/expr2Store.ts
@@ -17,7 +17,8 @@ const useExpr2Store = defineStore('expr2', {
         trackFromIndex: 0,
         trackToIndex: 0,
         selectTrackFromIndex: 0,
-        selectTrackToIndex: 0
+        selectTrackToIndex: 0,
+        tableUpdate: false
     }),
     getters: {},
     actions: {}