#include <iostream>
#include <ctime>
using namespace std;
int main()
{
clock_t start,finish;
//先行后列
start=clock();
//执行内容
//.......
finish=clock();
//totaltime=(double)()/CLOCKS_PER_SEC;
cout<<"先行后列遍历时间为："<<finish-start<<"ms"<<endl;
return 0;
}