oj.uz

답안 #704767

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
704767 2023-03-03T01:23:07 Z willychan Trol (COCI19_trol) C++14
50 / 50
 1 ms 212 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
//#include<bits/extc++.h>
//__gnu_pbds

ll get(ll b){
	ll g = b%9;
	ll k = (g*g+g)/2;
	k+=45LL*(b/9);
	return k;
}

void solve(){
	ll l,r;cin>>l>>r;
	cout<<get(r)-get(l-1)<<"\n";
}

int main(){
	ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	int t;cin>>t;
	while(t--){
		solve();
	}

	return 0;
}

Subtask #1
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct