Submission #1280677

#	Time	Username	Problem	Language	Result	Execution time	Memory
1280677		syanvu	Kpart (eJOI21_kpart)	C++20	30 / 100	2107 ms	384548 KiB

Main

#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp> 
// #include <ext/pb_ds/tree_policy.hpp>

#define SS ios_base::sync_with_stdio(0);cin.tie(nullptr);cout.tie(nullptr);
// #pragma optimize("g", on)
#pragma GCC optimize("03")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,avx2,mmx,fma,avx,tune=native")
// #define int long long
// #define ull unsigned long long
#define all(x) x.begin(),x.end()
#define F first
#define S second


using namespace std;
// using namespace __gnu_pbds; 
// #define ordered_set tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update>

const int LG = 17,N = 1e3 + 1, MX = 1e5 + 1,inf = 1e9 + 1, MOD = 1e9 + 7;
const double eps = 1e-9;
int T = 1;


void solve() {
    int n;
    cin>>n;
    int a[n+1];
    int pref[n+1]={};
    for(int i=1;i<=n;i++){
        cin>>a[i];
        pref[i] = pref[i-1] + a[i];
    }
    int dp[n+1][pref[n]+1]={};
    for(int i = 1; i <= n; i++){
        dp[i][a[i]] = i;
    }
    for(int i=1;i<=n;i++){
        for(int j=0;j<=pref[n];j++){
            dp[i][j] = max(dp[i][j],dp[i-1][j]);
            if(j-a[i]>=0) dp[i][j] = max(dp[i][j], dp[i-1][j-a[i]]);
        }
    }
    vector<int> v;
    for(int k = 2; k <= n; k++){
        bool ch=0;
        for(int i = k; i <= n; i++){
            int sum = pref[i] - pref[i-k];
            if(sum%2 != 0){
                ch = 1;
                break;
            }
            if(dp[i][sum/2] < i - k + 1){
                ch = 1;
                break;
            }
        }
        if(ch) continue;
        v.push_back(k);
    }
    cout << v.size() << ' ';
    for(int k : v) cout << k << ' ';
    cout << '\n';
}
/*
1 2 3 4 5
5 4 3 2 1
*/
signed main() {
    SS
    int t = 1;
    if(T) cin >> t;
    while (t--) {
        solve();
    }
}

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