Submission #37466

#	Time	Username	Problem	Language	Result	Execution time	Memory
37466		nickyrio	Bank (IZhO14_bank)	C++14	100 / 100	393 ms	13744 KiB

bank

#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = a; i<= b; ++i)
#define FORD(i, a, b) for (int i = a; i>=b; --i)
#define REP(i, a) for (int i = 0; i<a; ++i)
#define DEBUG(x) { cerr << #x << " = " << x << endl; }
#define Arr(A, l, r) { cerr << #A  << " = "; FOR(_, l, r) cerr << A[_] << ' '; cerr << endl; }
#define N 21
#define pp pair<int, int>
#define next __next
#define prev __prev
#define __builtin_popcount __builtin_popcountll
#define bit(S, i) (((S) >> i) & 1)
#define IO ios::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define taskname "Test"
using namespace std;

int n, m, a[N], b[N], dp[1 << N];
vector<int> have[N];

template<class X, class Y> inline void Max(X &x, Y y) { x = x > y ? x : y; }

void cal(int mask, int level) {
    if (level == -1) {
        return;
    }
    cal(mask, level - 1);
    cal(mask + (1 << level), level - 1);
    REP(S, 1 << level) {
        Max(dp[S + mask + (1 << level)], dp[S + mask]);
    }
}
int main() {

 //   freopen(taskname".inp","r",stdin);
 //   freopen(taskname".out","w",stdout);
    IO;
    cin >> n >> m;
    FOR(i, 1, n) cin >> a[i];
    FOR(i, 2, n) a[i] += a[i - 1];
    REP(i, m) cin >> b[i];
    REP(S, 1 << m) {
        int total = 0;
        REP(i, m) if (bit(S, i)) total += b[i];
        FOR(i, 1, n) if (total == a[i]) {
            have[i].push_back(S);
        }
    }
    memset(dp, 0, sizeof dp);
    FOR(i, 1, n) {
        cal(0, m - 1);
        for (int mask : have[i]) {
            //cout << i << ' ' <<  mask << ' ' << dp[mask] << endl;
            if (dp[mask] == i - 1) {
                dp[mask] = i;
            }
        }
    }
    REP(S, 1 << m) {
        if (dp[S] == n) {
            cout << "YES";
            return 0;
        }
    }
    cout << "NO";
}

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