Submission #465905

#	Time	Username	Problem	Language	Result	Execution time	Memory
465905		JasperL	Trol (COCI19_trol)	C++14	50 / 50	1 ms	204 KiB

trol

#include <iostream>
#include <vector>
using namespace std;

typedef long long ll;

int q;
vector<ll> ret;

ll get(ll x) {
    ll b = x / 9;
    ll res = 45 * b;
    for (ll i = 0; i <= x%9; i++) res += i;
    return res;
}

int main() {
    cin >> q;
    for (int i = 0; i < q; i++) {
        ll l, r; cin >> l >> r;
        ret.push_back(get(r)-get(l-1));
    }
    for (ll z : ret) cout << z << endl;
}

• Subtask 1: 50 / 50