讨论 / 14行的AC100 c++代码
liyangjida 2018-06-20 14:37:29
点我顶贴 收藏 删除
#include<iostream>

#include<algorithm>

using namespace std;

bool l[10001];

int M,L,start,end;

int main(){

cin >> L >> M;

for (int i = 0; i < M; ++i){

cin >> start >> end;

for (int i = start; i <= end; ++i) l[i] = true;

}

cout << count(l, l + L + 1, false);

return 0;

}

查看更多回复
提交回复