Submission #167691

#	Time	Username	Problem	Language	Result	Execution time	Memory
167691		muhammad_hokimiyon	Bootfall (IZhO17_bootfall)	C++14	65 / 100	408 ms	262148 KiB

bootfall

#include <bits/stdc++.h>

#pragma GCC optimize("Ofast")

#define fi first
#define se second
#define ll long long

using namespace std;

const int N = 3e5 + 7;
const int mod = 1e9 + 7;

int n;
int a[N];
int d[N];
int d1[510][N];
vector < int > v[N];

void solve()
{
    cin >> n;
    int sum = 0;
    for( int i = 1; i <= n; i++ ){
        cin >> a[i];
        sum += a[i];
    }
    d[0] = 1;
    for( int i = 1; i <= n; i++ ){
        for( int j = sum; j >= 0; j-- ){
            if( j - a[i] >= 0 ){
                d[j] += d[j - a[i]];
            }
        }
    }
    if( sum % 2 ){
        cout << "0\n";
        return;
    }
    for( int i = 1; i <= n; i++ ){
        for( int j = 0; j <= sum; j++ ){
            d1[i][j] = d[j];
            if( j - a[i] >= 0 ){
                d1[i][j] -= d1[i][j - a[i]];
            }
        }
    }
    if( !d[sum / 2] ){
        cout << "0\n";
        return;
    }
    vector < int > ans;
    for( int i = 1; i <= sum; i++ ){
        bool f = false;
        for( int j = 1; j <= n; j++ ){
            int x = sum - a[j] + i;
            if( x % 2 )f = true;
            if( !d1[j][x / 2] )f = true;
        }
        if( !f )ans.push_back(i);
    }
    cout << (int)ans.size() << "\n";
    for( auto x : ans ){
        cout << x << " ";
    }
}

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    //freopen( "input.txt" , "r" , stdin );
    //freopen( "output.txt" , "w" , stdout );

    int t = 1;//cin >> t;
    while( t-- ){
        solve();
    }
}

• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 15 / 15
• Subtask 4: 16 / 16
• Subtask 5: 21 / 21
• Subtask 6: 0 / 35