제출 #362581

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
362581		valerikk	비스킷 담기 (IOI20_biscuits)	C++17	0 / 100	1085 ms	492 KiB

biscuits

#include <bits/stdc++.h>

using namespace std; 

typedef long long ll;

ll count_tastiness(ll x, vector<ll> a) {
    const int k = 60;
    while ((int)a.size() < k) a.push_back(0LL);
    ll res = 0;
    for (ll y = 0; y <= 100000; y++) {
        ll sum = 0;
        bool can = true;
        for (int i = 0; i < k; i++) {
            sum += a[i] * (1LL << i);
            if (sum < x * (y & ((1LL << (i + 1)) - 1))) {
                can = false;
                break;
            } 
        }
        if (can) res++;
    }
    return res;
}

#ifdef LOCAL
int main() {
    freopen("input.txt", "r", stdin);
    ios::sync_with_stdio(false);
    cin.tie(0);
    int k;
    ll x;
    cin >> k >> x;
    vector<ll> a(k);
    for (ll &z : a) cin >> z;
    cout << count_tastiness(x, a);
    return 0;
}
#endif

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