제출 #876534

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
876534		cpptowin	은행 (IZhO14_bank)	C++17	100 / 100	102 ms	21160 KiB

bank

#include<bits/stdc++.h>
#define fo(i,d,c) for(int i=d;i<=c;i++)
#define fod(i,c,d) for(int i=c;i>=d;i--)
#define maxn 2000010
#define N 1010
#define fi first
#define se second
#define pb emplace_back
#define en cout<<"\n";
#define int long long
#define inf 1000000000
#define pii pair<int,int>
#define vii vector<pii>
#define lb(x) x&-x
#define bit(i,j) ((i>>j)&1)
#define offbit(i,j) (i^(1<<j))
#define onbit(i,j) (i|(1<<j))
#define vi vector<int>
template <typename T1, typename T2> bool minimize(T1 &a, T2 b){if (a > b) {a = b; return true;} return false;}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b){if (a < b) {a = b; return true;} return false;}
using namespace std;
int n,m;
int a[maxn],b[maxn];
pii dp[maxn];
main()
{
    #define name "TASK"
    if(fopen(name".inp","r"))
    {
       freopen(name".inp","r",stdin);
       freopen(name".out","w",stdout);
    }
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    cin >> n >> m;
    fo(i,0,n - 1) cin >> a[i];
    fo(i,0,m - 1) cin >> b[i];
//    fo(i,0,m - 1) cout << b[i] << ' ';en;
    fo(mask,0,(1 << m) - 1) dp[mask] = {-1,0};
    dp[0] = {0,0};
    fo(mask,1,(1 << m) - 1)
    {
        fo(i,0,m - 1) if(bit(mask,i))
        {
            auto [id,val] = dp[offbit(mask,i)];
            if(id == -1) continue;
            if(val + b[i] == a[id]) dp[mask] = {id + 1,0};
            else if(val + b[i] < a[id]) dp[mask] = {id,val + b[i]};
        }
        if(dp[mask].fi == n) return cout << "YES",0;
    }
    return cout << "NO",0;
}

컴파일 시 표준 에러 (stderr) 메시지

bank.cpp:25:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   25 | main()
      | ^~~~
bank.cpp: In function 'int main()':
bank.cpp:30:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |        freopen(name".inp","r",stdin);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
bank.cpp:31:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |        freopen(name".out","w",stdout);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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