这俩程序块有啥区别呢？上面的对，下面的错？？？

  int n,m,q;
    scanf("%d%d%d",&n,&m,&q);
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            scanf("%d",&s[i][j]);
            a[i][j]+=s[i][j];
            a[i][j+1]-=s[i][j];
            a[i+1][j]-=s[i][j];
            a[i+1][j+1]+=s[i][j];
        }
    }

#include<iostream>
using namespace std;

const int N=1010;

int s[N][N],a[N][N];

int main(){
    int n,m,q;
    scanf("%d%d%d",&n,&m,&q);
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            scanf("%d",&a[i][j]);
            //a[i][j]+=s[i][j];
            a[i][j+1]-=a[i][j];
            a[i+1][j]-=a[i][j];
            a[i+1][j+1]+=a[i][j];
        }
    }
    //差分矩阵已经构造好

    int x1,y1,x2,y2,c;
    while(q--){
        scanf("%d%d%d%d%d",&x1,&y1,&x2,&y2,&c);
        a[x1][y1]+=c;
        a[x2+1][y2+1]+=c;
        a[x1][y2+1]-=c;
        a[x2+1][y1]-=c;
    }
    //询问已经结束


    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            s[i][j]=a[i][j]+s[i-1][j]+s[i][j-1]-s[i-1][j-1];
            printf("%d ",s[i][j]);
        }
        printf("\n");
    }



    return 0;
}