Submission #1030700

#	Time	Username	Problem	Language	Result	Execution time	Memory
1030700		ziewacz	Bank (IZhO14_bank)	C++17	44 / 100	273 ms	80468 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]++;
    }

    vector<int> v(m);
    for (int i = 0; i < m; i++) {
        cin >> v[i];
    }

    vector<vector<int>> a = gen(v, m);
    int ile = 0;
    vector<bool> visited(m, false);

    for (auto &podzbior : a) {
        int S = accumulate(podzbior.begin(), podzbior.end(), 0);
        if (S != 0 && goscie.find(S) != goscie.end()) {
            bool ok = true;
            vector<int> uzyte;
            for (auto &i : podzbior) {
                for (int j = 0; j < m; j++) {
                    if (v[j] == i && !visited[j]) {
                        uzyte.push_back(j);
                        break;
                    }
                }
            }

            if (uzyte.size() == podzbior.size()) {
                for (auto &idx : uzyte) {
                    visited[idx] = true;
                }
                goscie[S]--;
                if (goscie[S] == 0) {
                    goscie.erase(S);
                }
                ile++;
            }
        }
    }
    
    cout << ((ile == n) ? "YES" : "NO");
    return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:47:18: warning: unused variable 'ok' [-Wunused-variable]
   47 |             bool ok = true;
      |                  ^~

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