Submission #675655

#	Time	Username	Problem	Language	Result	Execution time	Memory
675655		LucaIlie	Bootfall (IZhO17_bootfall)	C++17	100 / 100	402 ms	1948 KiB

bootfall

#include <bits/stdc++.h>

using namespace std;

const int maxN = 500;
const int maxS = maxN * maxN;

int v[maxN + 1], dp[maxS + 1];
bitset<maxS + 1> tim, timTemp;

int main() {
    int n, s = 0;

    cin >> n;
    for ( int i = 1; i <= n; i++ )
        cin >> v[i], s += v[i];

    dp[0] = 1;
    for ( int i = 1; i <= n; i++ ) {
        for ( int j = s; j >= v[i]; j-- )
            dp[j] += dp[j - v[i]];
    }

    if ( s % 2 != 0 || !dp[s / 2] ) {
        cout << 0;
        return 0;
    }

    for ( int i = 0; i <= s; i++ )
        tim[i] = true;
    for ( int r = 1; r <= n; r++ ) {
        for ( int j = v[r]; j <= s; j++ )
            dp[j] -= dp[j - v[r]];

        timTemp.reset();
        for ( int i = 0; i <= s; i++ ) {
            if ( dp[i] )
                timTemp[abs( s - v[r] - i - i )] = true;
        }
        tim &= timTemp;

        for ( int j = s; j >= v[r]; j-- )
            dp[j] += dp[j - v[r]];
    }

    tim[0] = false;
    cout << tim.count() << "\n";
    for ( int i = 0; i <= s; i++ ) {
        if ( tim[i] )
            cout << i << " ";
    }

    return 0;
}

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