Submission #696988

#TimeUsernameProblemLanguageResultExecution timeMemory
696988allllekssssaBootfall (IZhO17_bootfall)C++14
44 / 100
1020 ms11776 KiB
#include<bits/stdc++.h> using namespace std; const int maxN = 350 + 5; const int bsSize = maxN * maxN + 10; int n; int a[maxN]; bitset<bsSize> dp[2][maxN]; int main() { cin >> n; int sum = 0; for (int i = 1; i<=n; i++) { cin >> a[i]; sum+=a[i]; } for (int i = 1; i <= n + 1; i++) { dp[0][i].set(0); } for (int i = 1; i<=n; i++) { for (int j = 1; j <= n + 1; j++) { if (i == j) { dp[i&1][j] = dp[(i&1) ^ 1][j]; } else { dp[i&1][j] = dp[(i&1) ^ 1][j] | (dp[(i&1) ^ 1][j] << a[i]); } } for (int j = 1; j<= n + 1; j++) { dp[(i - 1)&1][j].reset(); } } if (dp[n&1][n + 1][sum/2] == 0) { printf("0\n"); return 0; } vector<int> ans; for (int i = 1; i <= sum; i++) { bool ok = true; for (int j = 1; j<= n; j++) { int totSum = sum - a[j] + i; if (totSum % 2 == 1) ok = false; if (dp[n&1][j][totSum/2] == 0) ok = false; } if (ok) ans.push_back(i); } cout << ans.size() << endl; for (int i:ans) { cout << i << " "; } cout << endl; }
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