Submission #459597

#	Time	Username	Problem	Language	Result	Execution time	Memory
459597		JovanB	Bootfall (IZhO17_bootfall)	C++17	0 / 100	14 ms	3252 KiB

bootfall

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

using ll = long long;
using ld = long double;

const int N = 500;
const int ofs = N*N;
const int MOD = 1000000007;

int add(int a, int b){ a += b; if(a >= MOD) a -= MOD; return a; }
int sub(int a, int b){ return add(a, MOD - b); }

int moze[N*N+5];
int dp[2*N*N+5];
int a[N+5];

int main(){
    ios_base::sync_with_stdio(false), cin.tie(0);
    cout.precision(10);
    cout << fixed;

    int n;
    cin >> n;
    int poc = 0;
    for(int i=1; i<=n; i++){
        cin >> a[i];
        poc -= a[i];
        a[i] *= 2;
    }
    dp[ofs + poc] = 1;
    for(int i=1; i<=n; i++){
        for(int j=N*N; j>=-N*N+a[i]; j--){
            dp[ofs + j] = add(dp[ofs + j], dp[ofs + j - a[i]]);
        }
    }
    for(int i=1; i<=n; i++){
        for(int j=-N*N+a[i]; j<=N*N; j++){
            dp[ofs + j] = sub(dp[ofs + j], dp[ofs + j - a[i]]);
        }
        for(int j=1; j<=N*N; j++) moze[j] += (dp[ofs + j - a[i]/2] > 0);
        for(int j=N*N; j>=-N*N+a[i]; j--){
            dp[ofs + j] = add(dp[ofs + j], dp[ofs + j - a[i]]);
        }
    }
    vector <int> vec;
    for(int i=1; i<=N*N; i++) if(moze[i] == n) vec.push_back(i);
    cout << vec.size() << "\n";
    for(auto c : vec) cout << c << " ";
    cout << "\n";
    return 0;
}

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