oj.uz

답안 #456155

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
456155 2021-08-06T07:28:23 Z Jasiekstrz Trol (COCI19_trol) C++17
50 / 50
 1 ms 316 KB 
#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
long long f(long long x)
{
	long long d=x/9,r=x%9;
	return d*45+r*(r+1)/2;
}
void solve()
{
	long long l,r;
	cin>>l>>r;
	cout<<f(r)-f(l-1)<<"\n";
	return;
}
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int qq;
	cin>>qq;
	while(qq--)
		solve();
	return 0;
}

Subtask #1
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 312 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 316 KB Output is correct