Submission #1001477

#	Time	Username	Problem	Language	Result	Execution time	Memory
1001477		asdas	Bank (IZhO14_bank)	C++17	71 / 100	1085 ms	148308 KiB

bank

#include<bits/stdc++.h>
#define pll pair<ll, ll>
#define fi first
#define se second
#define ll int
#define pb push_back
#define ar array
#define vi vector
#define bit(i,x) ((x >> i) & 1ll)
#define all(x) x.begin(),x.end()
#define low(l,r,x) x.begin()+l,x.begin()+r 
#define len(l,r) (r-l+1)
#define PI acos(-1.0) 
const long long mod = 1e9+7, N =  2e5, INF = 1e18, Log = 19, MASK = 1 << 19;

template <class T> void setmin(T &a, T b) { if(b < a) a = b; }
template <class T> void setmax(T &a, T b) { if(b > a) a = b; }
template <class T> void add(T &a, T b) {a += b; if(a >= mod) a -= mod;}

using namespace std;
 
#define int long long


ll dp[21][1 << 21];
ll fac[N+5];

void kazuha() {
    ll n , m;
    cin >> n >> m;
    ll a[n+5] , b[m+5];
    ll pfs[n+5];
    pfs[0] = 0;
    for(int i = 1; i <= n;i++) {
        cin >> a[i];
        pfs[i] = pfs[i-1] + a[i];
    }
    for(int j =0; j < m;j++) {
        cin >> b[j];
    }
    ll s = (1 << m);
    for(int i = 0; i < s;i++) {
        ll cur = 0;
        for(int j = 0; j < m;j++) {
            if(bit(j, i)) cur += b[j];
        }
        fac[i] = cur;
    }
    dp[0][0] = 1;
    for(int i = 1; i <= n;i++) {
        for(int msk = 1; msk < s;msk++) {
            if(fac[msk] != pfs[i]) continue;
            for(int sub = msk; sub ; sub = (sub -1) & msk) {
                if(fac[sub] == a[i] && dp[i-1][msk ^ sub]) {
                    dp[i][msk] = 1; break; 
                }
            }
        }
    }
    ll ans = 0;
    for(int i = 0; i < s;i++) {
        if(dp[n][i]) {
            cout << "YES\n";
            return;
        }
    }
    cout << "NO\n";
}
 
 
 
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    // freopen("permutation.cpp", "r", stdin);
    // freopen("permutation.cpp", "w", stdout); 
    long long mitsu = 1;
    // cin >> mitsu;
    for(long long seele = 0; seele < mitsu;seele++) {
        // cout << "Case " << seele << " :"; 
        kazuha();
    }
}

Compilation message (stderr)

bank.cpp: In function 'void kazuha()':
bank.cpp:60:8: warning: unused variable 'ans' [-Wunused-variable]
   60 |     ll ans = 0;
      |        ^~~

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