jingshenshiliang @ 2023-11-08 22:04:42

by jingshenshiliang @ 2023-11-08 22:06:58

include<iostream>

using namespace std;

include<cstring>

int main() { int l,m; cin>>l>>m; int count=0; int arr[10000]={0}; for (int i = 0; i <= l; i++) { arr[i] = { 0 };

}

for(int i=0;i<m;i++)
{
    int start,end;
    cin>>start>>end;
    for(int j=start;j<=end;j++)
    {
        if(arr[j]==0)
        arr[j]=1;
    }

}
for(int i=0;i<=l;i++)
{
    if(arr[i]==0)
    count++;
}
cout<<count;
return 0;

}

by jingshenshiliang @ 2023-11-08 22:08:02

这是代码，第一回发帖，不太熟练，望谅解