Submission #1100900

#	Time	Username	Problem	Language	Result	Execution time	Memory
1100900		HuyAT	Bank (IZhO14_bank)	C++14	100 / 100	105 ms	8644 KiB

bank

#include<bits/stdc++.h>
#define newl '\n'

const int N = 20 + 10;
const int V = 1e7 + 10;
const long long INF = 1e18;
const long long M = 1e9 + 7;

std::pair<int,int> f[(1 << 20)];
int n,m,a[N + 1],b[N + 1];

void readData(){
    std::cin >> n >> m;
    assert(std::max(n,m) <= 20);
    for(int i = 0;i < n;++i){
        std::cin >> a[i];
        assert(a[i] > 0 && a[i] <= 1000);
    }
    for(int i = 0;i < m;++i){
        std::cin >> b[i];
        assert(b[i] > 0 && b[i] <= 1000);
    }
}
bool solve(){
    f[0] = {0,-a[0]};
    for(int i = 1;i < (1 << m);++i){
        f[i].second = -1e9;
        for(int j = 0;j < m;++j){
            if((i >> j) & 1){
                int p = (i & (~(1 << j)));
                if(f[p].second + b[j] < 0){
                    f[i] = std::max(f[i],{f[p].first,f[p].second + b[j]});
                }else if(f[p].second + b[j] == 0){
                    f[i] = std::max(f[i],{f[p].first + 1,-a[f[p].first + 1]});
                }
            }
            if(f[i].first == n){
                return true;
            }
        }
    }
//    std::cout << f[17].first << " " << f[17].second << newl;
    return false;
}
int main(){
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);std::cout.tie(nullptr);
    readData();
    std::cout << (solve() ? "YES" : "NO");
    return 0;
}

• Subtask 1: 19 / 19
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 29 / 29