Submission #1030692

#	Time	Username	Problem	Language	Result	Execution time	Memory
1030692		ziewacz	Bank (IZhO14_bank)	C++17	19 / 100	307 ms	80356 KiB

bank

#include <bits/stdc++.h>
#define imie(x...) cerr << "[" #x "]: ", [](auto... $) {((cerr << $ << "; "), ...); }(x), cerr << '\n'
using namespace std;
typedef long long ll;
typedef long double ld;
const int MOD = 1000000007;

vector<vector<int>> gen(const vector<int>& a, int n){
    vector<vector<int>> podzbiory;
    
    for(int maska = 0; maska < (1 << n); maska++){
        vector<int> podzbior;
        for(int i = 0; i < n; i++){
            if(maska & (1 << i)){
                podzbior.push_back(a[i]);
            }
        }
        sort(podzbior.begin(), podzbior.end());
        podzbiory.push_back(podzbior);
    }

    return podzbiory;
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    
    int n, m;
    cin >> n >> m;
    map<int, int> goscie;
    for(int i = 0; i < n; i++) {
        int x;
        cin >> x;
        goscie[x] = i;
    }
    vector<int> v(m);
    for(int i = 0; i < m; i++) {
        cin >> v[i];
    }

    vector<vector<int>> a = gen(v, m);
    int ile = 0;
    bool ans = false;
    vector<bool> visited(m, false);
    for(auto &podzbior : a) {
        int S = 0;
        vector<int> xd;
        for(auto &i : podzbior) {
            if(!visited[i]) {
                S += i;
                xd.push_back(i);
            }
        }
        if(S != 0 && goscie.find(S) != goscie.end()) {
            goscie.erase(S);
            for(auto &x : xd) {
                visited[x] = true;
            }
            ile++;
        }
    }
    cout << ((ile == n) ? "YES" : "NO");
    return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:44:10: warning: unused variable 'ans' [-Wunused-variable]
   44 |     bool ans = false;
      |          ^~~

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