제출 #1227654

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1227654		thesen	Trol (COCI19_trol)	C++20	50 / 50	0 ms	328 KiB

trol

#include <bits/stdc++.h>
#define pb push_back
#define ll long long
#define vint vector <int>
#define vll vector <ll>
#define vbool vector<bool>
#define pairint pair<int,int>
#define pairll pair<ll,ll>
#define fi first
#define sc second
#define rever greater<ll>()
using namespace std;

void solve(ll tc){
    ll l, r; cin >> l >> r; l--;
    ll x = l%9 + 1;
    l = (l/9 * 45) + x * (x-1) / 2;
    x = r%9 + 1;
    r = (r/9 * 45) + x * (x-1) / 2;
    cout << r - l << endl;
}

int main(){
    ll t; cin >> t;
    for(int i = 1; i <= t; i++){
        solve(i);
    }
}

• Subtask 1: 50 / 50