제출 #461520

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
461520		Yuisuyuno	은행 (IZhO14_bank)	C++14	100 / 100	183 ms	16836 KiB

bank

//Nguyen Huu Hoang Minh
#include <bits/stdc++.h>
#define sz(x) int(x.size())
#define all(x) x.begin(),x.end()
#define reset(x) memset(x, 0,sizeof(x))
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define N 25
#define remain(x) if (x > MOD) x -= MOD
#define ii pair<int, int>
#define iiii pair< ii , ii >
#define viiii vector< iiii >
#define vi vector<int>
#define vii vector< ii >
#define bit(x, i) (((x) >> (i)) & 1)
#define Task "test"
#define int long long

using namespace std;

typedef long double ld;
const int inf = 1e10;
const int minf = -1e10;

int n, m;
int pp[N], s[N];

void readfile()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
    if (fopen(Task".inp","r"))
    {
        freopen(Task".inp","r",stdin);
        //freopen(Task".out","w",stdout);
    }
    cin >> n >> m;
    for(int i=0; i<n; i++) cin >> pp[i];
    for(int i=0; i<m; i++) cin >> s[i];
}

int dp[1<<20];
int lef[1<<20];

void proc()
{
    memset(dp, -1, sizeof dp);
    memset(lef, -1, sizeof lef);
    dp[0]  = 0;
    lef[0] = 0;
    int mm = (1<<m);
    for(int msk = 0; msk < mm; msk++){
        for(int i=0; i<m; i++){
            if (msk&(1<<i) == 0) continue;
            int pre = msk^(1<<i);
            if (dp[pre]==-1) continue;
            int new_amt = lef[pre]+s[i];
            int cur_tar = pp[dp[pre]];
            if (new_amt < cur_tar){
                lef[msk] = new_amt;
                dp[msk] = dp[pre];
            }
            else if (new_amt == cur_tar){
                lef[msk] = 0;
                dp[msk] = dp[pre]+1;
            }
        }
        if (dp[msk]==n){
            cout << "YES";
            return;
        }
    }
    cout<<"NO";
}

signed main()
{
    readfile();
    proc();
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

bank.cpp: In function 'void proc()':
bank.cpp:56:28: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   56 |             if (msk&(1<<i) == 0) continue;
      |                     ~~~~~~~^~~~
bank.cpp: In function 'void readfile()':
bank.cpp:36:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |         freopen(Task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

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