Submission #645310

#	Time	Username	Problem	Language	Result	Execution time	Memory
645310		Hacv16	Trol (COCI19_trol)	C++17	50 / 50	1 ms	212 KiB

trol

#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

const int MAX = 2e6 + 15;
const int INF = 0x3f3f3f3f;
const int MOD = 1e9 + 7;

#define pb push_back
#define sz(x) (int) x.size()
#define fr first
#define sc second
#define mp make_pair
#define all(x) x.begin(), x.end()
#define dbg(x) cerr << #x << ": " << "[ " << x << " ]\n"

ll f(ll x){
    return (x % 9 == 0 ? 9 : x % 9);
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); 

    ll q; cin >> q;

    while(q--){
        ll l, r; cin >> l >> r;
        ll ans = ((r - l + 1) / 9) * 45;

        for(ll i = 0; i < (r - l + 1) % 9; i++) {
            ll tmp = (l + i) % 9;
            if (tmp == 0) tmp = 9;
            ans += tmp;
        } 

        cout << ans << '\n';
    }   

    return 0;
}

• Subtask 1: 50 / 50