Submission #813251

#	Time	Username	Problem	Language	Result	Execution time	Memory
813251		exodus_	Bank (IZhO14_bank)	C++14	46 / 100	48 ms	5348 KiB

bank

#include<bits/stdc++.h>
using namespace std;
int N,M;
vector<int>sum[40004];
vector<vector<bool>>memo(30, vector<bool>(1048577, 0));
int pip[30];
bool can = false;
void dp(int idx, int mask) {
    if(idx > N-1) {
        can = true;
        return;
    }
    if(memo[idx][mask]==true) dp(idx+1, mask);
    for(auto x:sum[pip[idx]]) {
        int ses = mask&x;
        if(ses == 0) {
            int lanj = mask|x;
            dp(idx+1, lanj);
            memo[idx][mask]=true;
        }
    }
}

int main() {
    cin >> N >> M;
    vector<int>vek(M);
    for(int i=0; i<N; i++) {
        cin >> pip[i];
    }
    for(int i=0; i<M; i++) {
        cin >> vek[i];
    }
    for(int i=0; i<N; i++) {
        for(int mask=0; mask<(1<<M); mask++) {
            int sm=0;
            for(int k=0; k<M; k++) {
                int tmp = (mask>>k)&1;
                if(tmp) sm+=vek[k];
            }
            if(sm==pip[i]) sum[pip[i]].emplace_back(mask);
        }
    }
    dp(0,0);
    if(can) cout << "YES"; else cout << "NO";
    return 0;
}

• Subtask 1: 19 / 19
• Subtask 2: 0 / 25
• Subtask 3: 27 / 27
• Subtask 4: 0 / 29