题意:n个人,在规定时间范围内,找到最多有多少对男女能一起出面。

思路:ans=max(2*min(一天中有多少个人能出面))

 #include<iostream>
#include<string>
#include<algorithm>
#include<cstdlib>
#include<cstdio>
#include<set>
#include<map>
#include<vector>
#include<cstring>
#include<stack>
#include<cmath>
#include<queue>
#define clc(a,b) memset(a,b,sizeof(a))
#include <bits/stdc++.h>
using namespace std;
#define LL long long int main()
{
int n;
int p[][];
scanf("%d",&n);
clc(p,);
for(int i=; i<=n; i++)
{
char c;
int l,r;
getchar();
scanf("%c%d%d",&c,&l,&r);
if(c=='M')
{
for(int j=l; j<=r; j++)
p[][j]++;
}
else
{
for(int j=l; j<=r; j++)
p[][j]++;
}
}
int ans=;
for(int i=; i<=; i++)
ans=max(ans,*min(p[][i],p[][i]));
cout<<ans<<endl;
return ;
}

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