Submission #569847

#	Time	Username	Problem	Language	Result	Execution time	Memory
569847		gg123_pe	Bootfall (IZhO17_bootfall)	C++14	44 / 100	1086 ms	10584 KiB

bootfall

#include <bits/stdc++.h>
using namespace std; 

#define f(i,a,b) for(int i = a; i < b; i++)
const int N = 250002; 

int n, a[505], s; 
bitset <N> on, is[505]; 

int main(){
    cin >> n; 
    f(i,1,n+1) {
        cin >> a[i];
        s += a[i]; 
    } 

    f(i,0,n+1){
        is[i][0] = 1; 
        f(j,0,n+1){
            if(j == i) continue; 
            is[i] = (is[i]|(is[i]<<a[j])); 
        }
    }

    f(i,0,N) on[i] = 1; 

    f(i,1,n+1){
        f(j,0,N){
            if(j%2 != (s-a[i])%2 or !is[i][(s-a[i]+j)/2]) on[j] = 0; 
        }
    }
    if(s%2 == 1 or !is[0][s/2]){
        f(i,0,N) on[i] = 0; 
    }
    cout << on.count() << "\n"; 
    f(i,0,N) if(on[i]) cout << i << " "; 
    cout << "\n"; 

    return 0; 
}

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