Submission #682009

#TimeUsernameProblemLanguageResultExecution timeMemory
682009boykutBootfall (IZhO17_bootfall)C++14
0 / 100
1 ms468 KiB
#include <bits/stdc++.h> using namespace std; const int MAX = 600; int dp[MAX*MAX], can[MAX*MAX]; int a[MAX]; int main() { ios::sync_with_stdio(0); cin.tie(0); int n, sum; cin >> n; for (int i = 0; i < n; i++) { cin >> a[i]; sum += a[i]; } dp[0] = 1; for (int i = 0; i < n; i++) { for (int x = sum; x >= 0; x--) { dp[x+a[i]] += dp[x]; } } if (sum%2 == 1 || dp[sum/2] == 0) { return cout << 0, 0; } fill(can, can+sum+1, 1); vector<int> ans; for (int Without = 0; Without < n; Without++) { fill(dp, dp+sum+1, 0); dp[0] = 1; for (int i = 0; i < n; i++) { for (int x = sum; x >= 0; x--) { if (i != Without) dp[x+a[i]] += dp[x]; } } // a[Without] êàìåðà êàðìàï òóðàò for (int Tima = 1; Tima <= sum; Tima++) { if ((sum-a[Without]+Tima)%2 == 1 || dp[(sum-a[Without]+Tima)/2] == 0) { can[Tima] = 0; } } } for (int Tima = 1; Tima <= sum; Tima++) { if (can[Tima] == 1) { ans.push_back(Tima); } } cout << ans.size() << "\n"; for (int i = 0; i < ans.size(); i++) { cout << ans[i] << " "; } return 0; }

Compilation message (stderr)

bootfall.cpp: In function 'int main()':
bootfall.cpp:59:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |   for (int i = 0; i < ans.size(); i++) {
      |                   ~~^~~~~~~~~~~~
bootfall.cpp:52:27: warning: 'sum' may be used uninitialized in this function [-Wmaybe-uninitialized]
   52 |   for (int Tima = 1; Tima <= sum; Tima++) {
      |                      ~~~~~^~~~~~
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