Submission #1001792

#	Time	Username	Problem	Language	Result	Execution time	Memory
1001792		vjudge1	Bank (IZhO14_bank)	C++14	100 / 100	66 ms	8612 KiB

bank

#include <bits/stdc++.h>
#define fi first
#define se second
#define ll long long
#define ull unsigned long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pb push_back
#define taskname ""
using namespace std;
ll m, n, i, q, t, j, w, a[29], b[29];
pii dp[1048580], k;
int main() {
	if (fopen(taskname".inp","r")) {
		freopen(taskname".inp","r",stdin);
		freopen(taskname".out","w",stdout);
	}
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
    cin >> n >> m;
    for(i = 1; i <= n; i++) cin >> a[i];
    for(i = 1; i <= m; i++) cin >> b[i];
    t = 1 << m;
    dp[0] = {0, a[1]};
    for(i = 1; i < t; i++){
        q = 1;
        for(j = 1; j <= m; j++){
            w = q & i;
            if(w){
                if(b[j] <= dp[i - q].se){
                    dp[i] = {dp[i - q].fi, dp[i - q].se - b[j]};
                    if(dp[i].se == 0){
                        dp[i].fi++;
                        if(dp[i].fi == n){
                            cout << "YES";
                            return 0;
                        }
                        dp[i].se = a[dp[i].fi + 1];
                    }
                }

            }
            q <<= 1;
        }
    }
    cout << "NO";

    //cout << dp[16].fi;
	return 0;
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:15:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |   freopen(taskname".inp","r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:16:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |   freopen(taskname".out","w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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