제출 #921451

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
921451		ksujay2	비스킷 담기 (IOI20_biscuits)	C++17	0 / 100	1060 ms	196664 KiB

biscuits

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
 
ll count_tastiness(ll x, vector<ll> a) {
    a.resize(60);
    map<pair<int, ll>, ll> mp;
    function<ll(int, ll)> f = [&] (int i, ll y) {
        if(i < 0) return (ll)(y == 0);
        if(mp.count({i, y})) return mp[{i, y}];
        y -= a[i] * (1LL << i);
        mp[{i, y}] = f(i - 1, max(0ll, y)) + ((x < (1LL << (60 - i))) ? f(i - 1, max(0ll, y + x * (1LL << i))) : 0);
        return mp[{i, y}];
    };
    return f(59, 0);
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 12
• Subtask 3: 0 / 21
• Subtask 4: 0 / 35
• Subtask 5: 0 / 23