嗯好好好~~把数组调小后~~[不TLE了](https://www.luogu.com.cn/record/139079180)，不过7个RE也不行啊o(╥﹏╥)o
by Zskioaert1106 @ 2023-12-10 15:57:32
你可以试下数学归纳法```c
#include<iostream>
#include<algorithm>
using namespace std;
int n, ans = 0, finish = 0;
struct contest {
int l, r;
} con[1000010];
bool cmp(contest a, contest b) {
return a.r <= b.r;
}
int main() {
cin >> n;
for (int i = 1; i <= n; i++)
cin >> con[i].l >> con[i].r;
sort(con + 1, con + 1 + n, cmp);
for (int i = 1; i <= n; i++)
if (finish <= con[i].l)
ans++, finish = con[i].r;
cout << ans << endl;
return 0;
}
```
by 71425wsf @ 2023-12-19 22:27:00