Submission #895739

#	Time	Username	Problem	Language	Result	Execution time	Memory
895739		Kodik	Bank (IZhO14_bank)	C++17	0 / 100	111 ms	262144 KiB

bank

#include <bits/stdc++.h>
using namespace std;

typedef long long  ll;
typedef long double ld;

#define ff first
#define ss second



int main(){
    ios_base::sync_with_stdio(false), cin.tie(NULL);
    freopen("bank.in", "r", stdin);
	freopen("bank.out", "w", stdout);
    int p, m;
    cin >> p >> m;
    vector<int> people(p);
    vector<int> money(m);
    for(int &i : people) {cin >> i;}
    for(int &i : money) {cin >> i;}
    vector<int> leftover(1<<m, -1);
    vector<int> people_covered(1<<m, -1);
    leftover[0] = 0;
    people_covered[0] = 0;
    for(int s = 0; s < (1<<m); ++s){
        for(int last = 0; last < m; ++last){
            if(!(s&(1<<last))) continue;
            int prev = s & ~(1<<last);
            if(people_covered[prev]==-1) continue;
            int new_amt = leftover[prev] + money[last];
            int curr_target = people[people_covered[prev]];
            if(new_amt < curr_target){
                people_covered[s] = people_covered[prev];
                leftover[s] = new_amt;
            }else if(new_amt==curr_target){
                people_covered[s] = people_covered[prev]+1;
                leftover[s] = 0;
            }
        }
        if(people_covered[s]==p){
            cout << "YES\n";
            return 0;
        }
    }
    cout << "NO\n";
    return 0;   
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:14:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     freopen("bank.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:15:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |  freopen("bank.out", "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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