oj.uz

Submission #114873

# Submission time Handle Problem Language Result Execution time Memory
114873 2019-06-03T18:10:29 Z mrboorger Bank (IZhO14_bank) C++14
19 / 100
 1000 ms 384 KB 
#include <bits/stdc++.h>
#include <vector>
#include <set>
#include <iostream>
//#pragma GCC optimize("Ofast")

#define ld long double
#define ll long long
#define F first
#define S second
#define pb push_back
#define mp make_pair

using namespace std;

//mt19937 gen(time(0));
const ll inf = 1e18 + 18;
vector <int> a, b;

main()
{
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#else
//    freopen("divide.in", "r", stdin);
//    freopen("divide.out", "w", stdout);
#endif

    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, m;
    cin >> n >> m;
    if (n > m)
    {
        cout << "NO";
        return 0;
    }
    a.resize(n, 0);
    b.resize(m, 0);
    for(int i = 0; i < n; i++)
        cin >> a[i];
    for(int i = 0; i < m; i++)
        cin >> b[i];
    random_shuffle(a.begin(), a.end());
    random_shuffle(b.begin(), b.end());
    if (n == 1)
    {
        //O(2 ^ m * m)
        for(int i = 0; i < int(1 << m); i++)
        {
            int sum = 0;
            for(int j = 0; j < m; j++)
            {
                if ((i & (1 << j)) > 0) sum += b[j];
            }
            if (a[0] == sum)
            {
                cout << "YES";
                return 0;
            }
        }
    }
    else
    {
//         O(m! * (n + m))
        while(next_permutation(b.begin(), b.end()))
        {
            vector <int> c = a;
            int i = 0;
            int j = 0;
            bool f = true;
            while(i < n && j < m)
            {
                if (c[i] > 0)
                {
                    c[i] -= b[j];
                    j++;
                }
                if (c[i] == 0)
                {
                    i++;
                }
                if (c[i] < 0)
                {
                    f = false;
                    break;
                }
            }
            if (f && i == n)
            {
                cout << "YES";
                return 0;
            }
        }
    }
    cout << "NO";
    return 0;
}

Compilation message

bank.cpp:20:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^

Subtask #1
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 6 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 70 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 67 ms 384 KB Output is correct

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Incorrect 6 ms 384 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1068 ms 256 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 6 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 70 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 67 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Incorrect 6 ms 384 KB Output isn't correct
13 Halted 0 ms 0 KB -