又又来求化简

P3397 地毯

qjxqjx @ 2021-09-11 12:14:45

#include<iomanip>
#include<stdio.h>
#include<cstdio>
#include<map>
#include<windows.h>
#include<queue>
#include<stack>
#include<cstring>
#include<algorithm>
#include<cmath> 
#include<cstdlib>
#include<ctime>
#include<string>
#define LL long long>
using namespace std;
const LL MAXN=1010;
LL n;
LL m;
LL a[MAXN][MAXN];
int main()
{
    scanf("%d%d",&n,&m);
    for(int i=1;i<=m;i++)
    {
        int x,y,x2,y2;
        scanf("%d%d%d%d",&x,&y,&x2,&y2);
        for(int j=x;j<=x2;j++)
        {
            for(int k=y;k<=y2;k++)
            {
                a[j][k]++;
            }
        }
    }
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=n;j++)
        {
            printf("%d ",a[i][j]);
        }
        printf("\n");
    }
    return 0;
}

求求求求求助助助助助


by HL_Lee4974 @ 2021-10-09 16:12:15

咋不用差分


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