oj.uz

Submission #539069

# Submission time Handle Problem Language Result Execution time Memory
539069 2022-03-18T10:55:38 Z ddy888 Kpart (eJOI21_kpart) C++17
30 / 100
 2000 ms 172260 KB 
// #undef _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define pb push_back
// #define fi first
// #define si second
// #define ar array
// typedef pair<int,int> pi;
// typedef tuple<int,int,int> ti;  
// void debug_out() {cerr<<endl;}
// template <typename Head, typename... Tail>
// void debug_out(Head H, Tail... T) {cerr<<" "<<to_string(H);debug_out(T...);}
// #define debug(...) cerr<<"["<<#__VA_ARGS__<<"]:",debug_out(__VA_ARGS__)
 
int T;
int N;
 
int main() {
    fast;
    cin >> T;
    while (T--) {
        cin >> N;
        vector<int> A(N + 1), ps(N + 1);
        for (int i = 1; i <= N; ++i) {
            cin >> A[i];   
            ps[i] = ps[i - 1] + A[i];
        }
        vector<vector<int> > dp(N + 1, vector<int>(50100));
        vector<int> cannot(N + 1);
        for (int en = 1; en <= N; ++en) {
            dp[en][0] = en;
            if (A[en] <= 50000) dp[en][A[en]] = en;
            for (int value = 1; value <= 50000; ++value) {
                if (value >= A[en]) dp[en][value] = max(dp[en - 1][value - A[en]], dp[en - 1][value]);
                else dp[en][value] = dp[en - 1][value];
            }

            for (int i = 1; i <= en; ++i) {
                int sum = ps[en] - ps[i - 1];
                if (sum % 2 != 0 || dp[en][sum / 2] < i) cannot[en - i + 1] = 1;
            }
        }       
        vector<int> ans;
        for (int i = 1; i <= N; ++i) if (!cannot[i]) ans.pb(i);
        cout << ans.size() << ' ';
        for (auto i: ans) cout << i << ' ';
        cout << '\n';
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 66 ms 6516 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 154 ms 13820 KB Output is correct
2 Correct 367 ms 23652 KB Output is correct

Subtask #3
0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 662 ms 51028 KB Output is correct
2 Correct 1111 ms 75796 KB Output is correct
3 Correct 1102 ms 85724 KB Output is correct
4 Correct 1527 ms 111292 KB Output is correct
5 Execution timed out 2101 ms 172260 KB Time limit exceeded
6 Halted 0 ms 0 KB -