Submission #704751

#	Time	Username	Problem	Language	Result	Execution time	Memory
704751		becaido	Trol (COCI19_trol)	C++17	50 / 50	1 ms	320 KiB

trol

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,popcnt,sse4,abm")
#include <bits/stdc++.h>
using namespace std;

#ifdef WAIMAI
#define debug(HEHE...) cout << "[" << #HEHE << "] : ", dout(HEHE)
void dout() {cout << '\n';}
template<typename T, typename...U>
void dout(T t, U...u) {cout << t << (sizeof...(u) ? ", " : ""), dout(u...);}
#else
#define debug(...) 7122
#endif

#define ll long long
#define Waimai ios::sync_with_stdio(false), cin.tie(0)
#define FOR(x,a,b) for (int x = a, I = b; x <= I; x++)
#define pb emplace_back
#define F first
#define S second

int q;
ll l, r;

ll sum(int a, int b) {
    return (a + b) * (b - a + 1) / 2;
}

ll sum(ll x) {
    ll t = x / 9;
    x %= 9;
    return sum(1, 9) * t + sum(1, x);
}

void solve() {
    cin >> q;
    while (q--) {
        cin >> l >> r;
        cout << sum(r) - sum(l - 1) << '\n';
    }
}

int main() {
    Waimai;
    solve();
}

• Subtask 1: 50 / 50