@[Danieldeng773](/user/1373509) ，
把
```
sort(M1,M1+n-1,compare);
```
改为
```
sort(M1,M1+n,compare);
```
求关
by goIdie @ 2024-08-24 21:18:56
#include <bits/stdc++.h>
using namespace std;
struct bi{
int a1,b1;
}a[1000010];
bool cmp(bi c1,bi c2){
return c1.b1<c2.b1;
}
int main() {
int n,t=0,cnt=0;
cin>>n;
for(int i=1;i<=n;i++){
cin>>a[i].a1>>a[i].b1;
}
sort(a+1,a+1+n,cmp);
for(int i=1;i<=n;i++){
if(t<=a[i].a1){
cnt++;
t=a[i].b1;
}
}
cout<<cnt;
return 0;
}
| | |
| -----------: | -----------: |
| | |
| | |
```c
#include <bits/stdc++.h>
using namespace std;
struct bi{
int a1,b1;
}a[1000010];
bool cmp(bi c1,bi c2){
return c1.b1<c2.b1;
}
int main() {
int n,t=0,cnt=0;
cin>>n;
for(int i=1;i<=n;i++){
cin>>a[i].a1>>a[i].b1;
}
sort(a+1,a+1+n,cmp);
for(int i=1;i<=n;i++){
if(t<=a[i].a1){
cnt++;
t=a[i].b1;
}
}
cout<<cnt;
return 0;
}
by lichengyi666 @ 2024-08-26 14:23:56
帮你改好了
by lichengyi666 @ 2024-08-26 14:26:06
@[Danieldeng773](/user/1373509)
by lichengyi666 @ 2024-08-26 14:26:50
谢谢大佬?
by Himborne @ 2024-08-26 17:35:44