Submission #537472

#	Time	Username	Problem	Language	Result	Execution time	Memory
537472		joelau	Kpart (eJOI21_kpart)	C++14	30 / 100	2140 ms	787108 KiB

Main

#include <bits/stdc++.h>
using namespace std;

int T,N,A[1005], sum[1005], memo[1005][100005], memo2[1005][100005], TC;
bitset<1005> bs;
unordered_map<int,int> mp;

int dp (int n, int sum) {
    if (n == 0) return 0;
    if (sum == 0 || sum == A[n]) return n;
    if (memo2[n][sum] == TC) return memo[n][sum];
    memo2[n][sum] = TC;
    return memo[n][sum] = max(dp(n-1,sum),dp(n-1,sum-A[n]));
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    memset(memo,-1,sizeof(memo));
    memset(memo2,-1,sizeof(memo2));
    cin >> T;
    for (TC = 0; TC < T; ++TC) {
        cin >> N;
        A[0] = sum[0] = 0;
        for (int i = 1; i <= N; ++i) {
            cin >> A[i];
            sum[i] = sum[i-1] + A[i];
        }
        bs.reset();
        for (int i = 1; i <= N; ++i) bs[i] = 1;
        for (int i = 1; i <= N; ++i) for (int j = 1; j <= i; ++j) {
            int total = sum[i] - sum[j-1];
            if (total % 2 == 1 || dp(i,total/2) < j) bs[i-j+1] = 0;
        }
        cout << bs.count();
        for (int i = 1; i <= N; ++i) if (bs[i]) cout << ' ' << i;
        cout << '\n';
    }

    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 70