贪心算法：今年暑假不AC

 

 

#include<algorithm>
#include<string.h>
#include<iostream>
#include<stdio.h>
#include<string.h>
using namespace std;
struct TvShow
{
    int Ti_s;
    int Ti_e;
    bool operator <(const TvShow &A)const
    {
        return Ti_e < A.Ti_e;
    }
}buf[1000];
int main()
{
    int n;
    while (cin >> n)
    {
        if (n == 0)
            break;
        for (int i = 0; i < n; i++)
        {
            cin >> buf[i].Ti_s >> buf[i].Ti_e;
        }
        sort(buf, buf + n);
        int count = 0;
        int currentTime = 0;
        for (int i = 0; i < n; i++)
        {
            if (currentTime <= buf[i].Ti_s)
            {
                currentTime = buf[i].Ti_e;
                count++;
            }
        }
        cout << count << endl;
    }
    return 0;
}