oj.uz

Submission #539050

# Submission time Handle Problem Language Result Execution time Memory
539050 2022-03-18T10:34:53 Z ddy888 Kpart (eJOI21_kpart) C++17
30 / 100
 2000 ms 320016 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);
        int lim = 0;
        for (int i = 1; i <= N; ++i) {
            cin >> A[i];   
            ps[i] = ps[i - 1] + A[i];
            lim += A[i];
        }
        vector<vector<int> > dp(N + 1, vector<int>(lim + 1));
        for (int en = 1; en <= N; ++en) {
            dp[en][0] = en;
            if (A[en] <= lim / 2 + 1) dp[en][A[en]] = en;
            for (int value = 1; value <= lim / 2 + 1; ++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];
            }
        }    
        vector<int> can(N + 1, 1);
        for (int k = 1; k <= N; ++k) {
            for (int i = 1; i <= N - k + 1; ++i) {
                int sum = ps[i + k - 1] - ps[i - 1];
                if (sum % 2 != 0) {can[k] = 0; break;}
                else if (dp[i + k - 1][sum / 2] < i) {can[k] = 0; break;}
            }
        }
        vector<int> ans;
        for (int i = 1; i <= N; ++i) {
            if (can[i]) ans.pb(i);
        }
        cout << (int)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 2 ms 668 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 2324 KB Output is correct
2 Correct 44 ms 6616 KB Output is correct

Subtask #3
0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 212 ms 26236 KB Output is correct
2 Correct 566 ms 59792 KB Output is correct
3 Correct 659 ms 76284 KB Output is correct
4 Correct 1216 ms 129516 KB Output is correct
5 Execution timed out 2096 ms 320016 KB Time limit exceeded
6 Halted 0 ms 0 KB -