제출 #362739

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
362739		sumit_kk10	은행 (IZhO14_bank)	C++14	0 / 100	408 ms	262144 KiB

bank

#include<bits/stdc++.h>
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
using namespace std;
const int MOD = 1e9 + 7;
const int N = 1e6 + 2;
vector<int> pos[N];
int n, m, a[N], b[N];
bool vis[N];
long long dp[20][(1LL << 20) + 1];

long long gen(int i, long long sum, vector<int>& cur){
    if(i == m){
        long long power = 0;
        for(auto k : cur)
            power = (power | k);
        pos[sum].push_back(power);
        return 0;
    }
    vector<int> cur1 = cur;
    gen(i + 1, sum, cur1);
    cur1.push_back(i);
    gen(i + 1, sum + b[i], cur1);
}

bool go(int i, long long mask){
	if(i == n)
		return true;
	if(dp[i][mask] != -1)
		return dp[i][mask];
	bool ans = false;
	for(auto k : pos[a[i]]){
		if(mask & k != 0) continue;
		ans |= go(i + 1, mask | k);
	}
	return dp[i][mask] = ans;
}

void solve() {
	memset(dp, -1, sizeof dp);
    cin >> n >> m;
    for(int i = 0; i < n; ++i)
        cin >> a[i];
    for(int i = 0; i < m; ++i)
        cin >> b[i];
    vector<int> ok;
    gen(0, 0, ok);
   	cout << (go(0, 0) ? "YES\n" : "NO\n");
}

int main() {
    fast;
    int t = 1;
    // cin >> t;
    while(t--)
        solve();
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

bank.cpp: In function 'bool go(int, long long int)':
bank.cpp:32:15: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   32 |   if(mask & k != 0) continue;
      |             ~~^~~~
bank.cpp:35:21: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   35 |  return dp[i][mask] = ans;
      |         ~~~~~~~~~~~~^~~~~
bank.cpp: In function 'long long int gen(int, long long int, std::vector<int>&)':
bank.cpp:19:24: warning: control reaches end of non-void function [-Wreturn-type]
   19 |     vector<int> cur1 = cur;
      |                        ^~~

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