合格的程序猿就应该养成从0开始数的习惯(手动狗头)
by LanQiao1234 @ 2024-05-16 00:04:45
我从零开始还是错的呀(捂脸)```
#include<stdio.h>
int main(){
int n,m,count=0;
scanf("%d %d",&n,&m);
int l[n+1]={0};
for(int i=0;i<m;i++){
int a,b;
scanf("%d %d",&a,&b);
for(int j=a-1;j<=b-1;j++)
l[j]=1;
}
for(int i=0;i<n+1;i++)
if(l[i]==0)
count++;
printf("%d\n",count);
}
```
by _hacket @ 2024-05-16 15:17:59