90分求助！！！！！！！！！！！！！！！

ATION001 @ 2024-06-16 19:50:12

#include<bits/stdc++.h>
using namespace std;
int b[1010],n,m,l,r,ans;
int main(){
    ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
    cin>>n>>m;
    while(m--){
        cin>>l>>r;
        for(int i=l;i<=r;i++){
            b[i]=1;
        }
    }
    for(int i=1;i<=n;i++){
        ans+=!b[i];
    }
    cout<<ans+1;
    return 0;
}

by MuYuMC @ 2024-06-16 19:53:57

@ATION001 看看我的代码吧

#include <iostream>
#include <string>
#include <cmath>
#include <algorithm>
#include <iomanip>
using namespace std;
int book[10100],L,m,l,r,ans,i;
int main()
{
    cin >> L >> m;
    for(i = 0;i <= L;i++)book[i] = 1;
    while(m--)
    {
        cin >> l >> r;
        for(i = l;i <= r;i++)book[i] = 0;
    }
    for(i = 0;i <= L;i++)
    {
        if(book[i])ans++;
    }
    cout << ans;
    return 0;
}

求关

by qcx2024 @ 2024-06-18 20:10:54

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int a[10010],b,c,d,e,num=0;
    cin>>b>>c;
    for(int i=0;i<=b;i++)
    {
        a[i]=1;
    }
    for(int j=0;j<=c-1;j++)
    {
        cin>>d>>e;
        for(int k=d;k<=e;k++)
        {
            a[k]=0;
        }
    }
    for(int l=0;l<=b;l++)
    {
        if (a[l]==1)
            num++;
    }
    cout<<num;
}

by qcx2024 @ 2024-06-18 20:11:21

更简洁的c++

by ATION001 @ 2024-07-01 14:14:07

@MuYuMC @qcx2024 能告诉我哪里错了吗？

by Syncc @ 2024-07-01 17:51:40

@ATION001 路的起点是0

by ATION001 @ 2024-07-01 17:59:58

@Razer_System 谢谢，已AC，可以互关吗？

by Syncc @ 2024-07-01 18:13:10

@ATION001 OK

by YFXxlZem @ 2024-07-14 18:54:43

第一个测试点有一组是0 100，这个0可能没有被算进去