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답안 #975913

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
975913 2024-05-06T03:14:19 Z vjudge1 Trol (COCI19_trol) C++17
50 / 50
 1 ms 348 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

int digitcalc(int n){
	int ret = 0;
	while(n!=0){
		ret += n%10;
		n/=10;
	}
	return ret;
}

signed main (){

	int q; cin >> q;
	for(int i = 0;i<q;i++){
		int l,r; cin >> l >> r;
		int prefr = 45*(r/9) + ((r%9) * ((r%9) + 1))/2;
		l--;
		int prefl = 45*(l/9) + ((l%9) * ((l%9) + 1))/2;
		cout << prefr - prefl << endl;
	}
	
	return 0;
}

Subtask #1
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct