没过的可以参考一下这道题

ACcode:

#include<bits/stdc++.h>
using namespace std;
int l1,r1,l2,r2,a[105],s=10;
int main(){
	freopen("paint.in","r",stdin);
	freopen("paint.out","w",stdout);
	for(int i=0;i<100001;i++){
		a[i]=0;
	}
	cin>>l1>>r1>>l2>>r2;
	for(int i=l1;i<=r1;i++){
		a[i]+=2;
	}
	for(int i=l2;i<=r2;i++){
		a[i]--;
	}
	for(int i=0;i<=101;i++){
		if(a[i]==2){
			s++;
		}
	}
	cout<<s;
	return 0;
}

代码拿走了？有错哦