제출 #582672

#제출 시각아이디문제언어결과실행 시간메모리
582672tengiz05Kpart (eJOI21_kpart)C++17
100 / 100
1254 ms724 KiB
#include <bits/stdc++.h> using namespace std; using i64 = long long; constexpr int N = 50005; void solve() { int n; cin >> n; vector<int> a(n), pre(n + 1); for (int i = 0; i < n; i++) { cin >> a[i]; pre[i + 1] = pre[i] + a[i]; } vector<int> dp(N + 1, -1); dp[0] = 0; vector<bool> ans(n, true); for (int i = 0; i < n; i++) { for (int j = N; j >= a[i]; j--) { dp[j] = max(dp[j], dp[j - a[i]]); } dp[a[i]] = i; for (int j = 0; j <= i; j++) { int sum = pre[i + 1] - pre[j]; if (sum % 2 != 0 || dp[sum / 2] < j) { ans[i - j] = false; } } } vector<int> res; for (int i = 0; i < n; i++) { if (ans[i]) res.push_back(i + 1); } cout << res.size() << " "; for (int x : res) { cout << x << " "; } cout << "\n"; } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int t; cin >> t; while (t--) { solve(); } return 0; }
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