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Submission #50291

# Submission time Handle Problem Language Result Execution time Memory
50291 2018-06-09T12:56:20 Z mra2322001 Bootfall (IZhO17_bootfall) C++14
0 / 100
 2 ms 376 KB 
#include <bits/stdc++.h>
#define f0(i, n) for(int i=(0); i<n; i++)
#define f1(i, n) for(int i=(1); i<=n; i++)

using namespace std;
typedef long long ll;
const int N = 502;

int n, a[N], f[N*N], sum = 0, dd[N*N];

void add(int x){
    for(int i = sum; i >= 0; i--){
        f[i] += f[i - x];
    }
}

void del(int x){
    for(int i = 0; i <= sum; i++){
        if(i >= x)
            f[i] -= f[i - x];
    }
}

int main(){
    ios_base::sync_with_stdio(0);

    cin >> n;
    f[0] = 1;
    f1(i, n){
        cin >> a[i], sum += a[i];
        add(a[i]);
    }
    if(sum%2 || f[sum/2]==0){
        return cout << 0, 0;
    }
    f1(i, n){
        del(a[i]);
        for(int j = sum; j >= 0; j--){
            if(f[j] != 0){
                int x = sum - 2*j - a[i];
                if(x > 0) dd[x]++;
            }
        }
        add(a[i]);
    }
    int cnt = 0;
    for(int j = 0; j <= sum; j++) if(dd[j]==n) ++cnt;
    cout << cnt << endl;
    for(int j = 0; j <= sum; j++) if(dd[j]==n) cout << j << " ";
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -