Submission #1056473

#	Time	Username	Problem	Language	Result	Execution time	Memory
1056473		YourEternalReward	Bank (IZhO14_bank)	C++14	0 / 100	2 ms	348 KiB

bank

/*

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*/

#include<bits/stdc++.h>
#define ll long long
#define ld long double
#define endl '\n'
#define rep(i,a,b) for(int i=a; i<=b; ++i)
#define rev(i,b,a) for(int i=b; i>=a; --i)
#define pii pair<ll,ll>
#define getbit(x,i) (x & (1ll<<i))
#define isz(v) (int)(v).size()
#define ALL(v) (v).begin(), (v).end()
using namespace std;
const int maxN = 1e5 + 7;
const ll inf = 1e9 + 7;
const ll mod = (1ll<<31) - 1;
const ll moreinf = 1e16 + 7;
const int AT = 2000;
const int BASE = 31;
const ld pi = acos(-1);
const ld eps = 1e-9;

int n,m;
ll p[21],b[21];
pii f[1<<21];

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #ifndef ONLINE_JUDGE
    freopen("input.inp","r",stdin);
    freopen("output1.out","w",stdout);
    #endif
    cin >> n >> m;
    rep(i,1,n) cin >> p[i];
    rep(i,1,m) cin >> b[i];
    rep(i,1,(1<<n)-1) f[i] = {-1,-1};
    f[0] = {0,0};
    rep(mask,0,(1<<m)-1){
        rep(i,0,m-1){
            if(getbit(mask,i) || f[mask].first == -1) continue;
            int submask = mask ^ (1<<i);
            pii t = f[mask];
            t.second += b[i+1];
            if(t.second == p[t.first+1]){
                t.first++;
                t.second = 0;
            }
            f[submask] = max(f[submask],t);
        }
        if(f[mask].first==n){
            cout << "YES";
            return 0;
        }
    }
    cout << "NO";
    return 0;   
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:77:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |     freopen("input.inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:78:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |     freopen("output1.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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