找规律题解|ac代码

找到规律就能写出来了

#include<bits/stdc++.h>
#define ll long long                                                        //防伪标识
#define MAXN 1005
#define maxn 10005
#define MAXM 10000
#define maxm 1000005
#define Y1 "YES"<<endl
#define N1 "NO"<<endl
#define Y2 "yes"<<endl
#define N2 "no"<<endl
#define Y3 "Yes"<<endl
#define N3 "No"<<endl
using namespace std;
ll t,l,r;
int main(){
	int T;cin>>T;
	while(T--){
		cin>>t>>l>>r;
		if (t==1) 
			cout<<((r + 1)/2)-(l/2) << endl;
		else 
			cout<<(r/2)-((l - 1)/2)<<endl;
	}
	return 0;
}