题解 | 游船出租

#include <iostream>
#include <cstring>
#include <cmath>
#include <stack>
#include <map>
#include <algorithm>
#include <string>
#define maxn 210
using namespace std;

int GetT(string s1,string s2)
{
    int h1,h2,m1,m2;
    h1 = (s1[1]-'0')+(s1[0]-'0')*10;
    m1 = (s1[4]-'0')+(s1[3]-'0')*10;
    h2 = (s2[1]-'0')+(s2[0]-'0')*10;
    m2 = (s2[4]-'0')+(s2[3]-'0')*10;
    int ans = (h2*60+m2)-(h1*60+m1);
    return ans;

}
bool flag[maxn]={0};
string t[maxn];
int main() {
    int N;
    char K;
    string T;
    int cnt=0;
    float ave=0;
    while(cin>>N>>K>>T)
    {
        
        if(N==-1)break;
        else if(N==0)
        {
            if(cnt)ave =ave*1.0/ cnt;
            else {
                ave=0;
                cnt=0;
            }
            printf("%d %.f\n",cnt,ave);
            cnt=0;
            ave = 0;
            memset(flag,false,sizeof(flag));
            
        }
        else {
            if(K=='E'&&flag[N]==1)
            {
                string now = T;
                ave += GetT(t[N],T);
         //       cout<<N<<" : "<<GetT(t[N],T)<<endl;
                cnt++;
       //         flag[N]=0;之前置零后就错了-->题目bug不用置零
                
            }
            else if(K =='S'){
                flag[N] = 1;
                t[N] = T;
            }
        }




    }

    

}
// 64 位输出请用 printf("%lld")