제출 #974559

#제출 시각아이디문제언어결과실행 시간메모리
974559vjudge1Trol (COCI19_trol)C++17
50 / 50
0 ms348 KiB
#include <bits/stdc++.h>
using namespace std;

unsigned long long x, y, xi, yi;
int a[11], n;

int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> n;
	for (int oi = 0; oi < n; oi++){
		cin >> x >> y;
		for (int i = 1; i < 10; i++){
			a[i] = a[i-1]+i;
		}
		x--;
		xi = (x/9) * 45 + a[x%9];
		yi = (y/9) * 45 + a[y%9];
		cout << yi - xi << "\n";
	}
}
#Verdict Execution timeMemoryGrader output
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