杭电oj1036c++详解

#include<iostream>
#include<string>
#include<iomanip>
#include<sstream>
#include<cmath>
#include<algorithm>
using namespace std;
int main(){
    int num;
    double dis;
    string time;
    int name;
    int h1,m1,s1;
    bool flag=false;
    cin>>num>>dis;
    string temp;
    while(cin>>name){
        int sumtime=0;
        flag=false;
        for(int i=0;i<num;i++){
            cin>>temp;
            if(temp=="-:--:--"){
            flag=true;
        }
            h1=temp[0]-'0';
            m1=(temp[2]-'0')*10+(temp[3]-'0');
            s1=(temp[5]-'0')*10+(temp[6]-'0');
            sumtime=sumtime+h1*3600+m1*60+s1;
        }
        if(flag){
            cout<<setiosflags(ios::right)<<setw(3)<<name<<":"<<" -"<<endl;
        }else{
            int secPerKilo = round(sumtime/dis);
            int minus = secPerKilo/60;
            int secs = (int)(secPerKilo)%60;
        cout<<setiosflags(ios::right)<<setw(3)<<name<<": "<<minus<<":";
        if(secs<10){
           cout<<0;    
        }
        cout<<secs<<" min/km"<<endl;
        }
            
    } 
}