90分求助

slry666 @ 2022-08-18 10:15:41

#include<iostream>
#include<cstdio>
#include<bits/stdc++.h>
using namespace std;
int n,m,i,j,x[10050],y[10050],ans,s[10050];
int main(){
    cin>>n>>m;
    for(i=1;i<=n+1;i++){
        s[i]=0;
    }
    for(i=1;i<=m;i++){
        cin>>x[i]>>y[i];
        for(j=x[i];j<=y[i];j++){
            s[j]=1;
        }
    }
    for(i=1;i<=n+1;i++){
        if(s[i]==0) ans++;
    }
    cout<<ans;
}

by slry666 @ 2022-08-18 10:16:09

第一个测试点废

by How1ver @ 2022-08-18 10:38:09

@slry666 应该从点0开始吧

by xiaoPanda @ 2022-08-18 10:38:52

从点0开始,到点n

by xiaoPanda @ 2022-08-18 10:39:28

for(i=1;i<=n+1;i++){
        if(s[i]==0) ans++;
    }

改成

for(i=0;i<=n;i++){
        if(s[i]==0) ans++;
    }

by slry666 @ 2022-08-18 10:42:51

谢谢

by sijiajun @ 2022-08-18 10:44:53

关于我愣了一会儿就多了一条回复这件事。

by sijiajun @ 2022-08-18 10:45:38

或者说是四条

by lizixuan1018 @ 2022-08-18 11:10:03

同意上层