LQB20180航班时间（sscanf)

 

 

 

 首先找找规律，两者相加除以二．

按格式读入sscanf

按格式输出printf("02d%"，m);前导0

#include <iostream>
#include <set>
#include <cstring>

using namespace std;
//快速幂运算
#define MAX  59084709587505
#define LL  long long

int Time(){
    char line[100]={};
    cin.getline(line,100);//getline读到换行
    int n1,m1,s1,n2,m2,s2,h=0;
    if(strlen(line)==17){
        sscanf(line,"%d:%d:%d %d:%d:%d",&n1,&m1,&s1,&n2,&m2,&s2);

    }
    else{
        sscanf(line,"%d:%d:%d %d:%d:%d (+%d)",&n1,&m1,&s1,&n2,&m2,&s2,&h);
    }
    int time=h*24*3600+n2*3600+m2*60+s2-(n1*3600+m1*60+s1);//全化成秒方便计算
    return time;

}

int main(){
    int T;
    (cin>>T).get();//把行尾的空格吃掉，要不会被getline 当成时间来读
    for (int i = 0; i <= T; ++i) {
        int time1=Time();
        int time2=Time();
        int ans=(time2+time2)/2;
        printf("%02d:%02d:%02d\n",ans/3600,ans/60%60,ans%60);//秒化小时化分钟
        
    }





    }