Submission #975886

#	Time	Username	Problem	Language	Result	Execution time	Memory
975886		vjudge1	Trol (COCI19_trol)	C++17	50 / 50	1 ms	348 KiB

trol

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pb push_back
#define ppb pop_back
#define mp make_pair 
#define fi first
#define se second
#define nl '\n'
const int mod = 1e9+7;

void solve(){
    int q; cin >> q;
    while (q--){
        int l, r; cin >> l >> r;
        int sum = 0;
        while (l % 9 != 0 && l <= r){
            sum += l%9;
            l++;
        }
        //cout << l << nl;
        if (l <= r){
            sum += 9;
            l++;
            int banyak = (r-l)/9;
            sum += banyak*45;
            l = l+(banyak*9);
            //cout << l;
            while (l <= r){
                if (l % 9 == 0) sum += 9;
                else sum += l%9;
                l++;
            }
        }
        cout << sum << nl;
    }
}

signed main (){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int t = 1; //cin >> t;
    while (t--){
        solve();
    } //12 13 14 15 16 17 18 19 20 21
}

• Subtask 1: 50 / 50