oj.uz

Submission #602852

# Submission time Handle Problem Language Result Execution time Memory
602852 2022-07-23T11:49:10 Z dozer Kpart (eJOI21_kpart) C++14
100 / 100
 1511 ms 200476 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
#define ll long long
ll INF=1e9,LINF=1e18,MOD=1e9+7; const ll MAXN=1e3+1,MAXA=1e5+1;
#define fi first
#define se second
#define pii pair<int,int>
#define mid ((l+r)/2)
#define sz(a) (int((a).size()))
#define all(a) a.begin(),a.end()
#define endl "\n"
#define PRINT(x) cerr<<#x<<'-'<<x<<endl<<flush;
#define pb push_back
#define PRINTvec(x) { cerr<<#x<<"-"; for(int i=0;i<sz(x);i++) cerr<<x[i]<<" "; cerr<<endl; }
 
int a[MAXN],dp[MAXN][MAXA],pref[MAXN];
 
void Solve(){
    int N; cin>>N;
    for(int i=1;i<=N;i++){
        cin>>a[i];
        pref[i]=a[i]+pref[i-1];
    }
    fill(dp[1],dp[1]+MAXA,0);
    dp[1][a[1]]=1;
    for(int i=2;i<=N;i++){
        for(int A=0;A<MAXA/2;A++){
            //PRINT(i); PRINT(A);
            dp[i][A]=dp[i-1][A];
            if(A>a[i]) dp[i][A]=max(dp[i][A],dp[i-1][A-a[i]]);
            else if(A==a[i]) dp[i][A]=i;
        }
    }
    vector<int> ans;
    for(int K=2;K<=N;K++){
        bool ok=true;
        for(int l=1;l+K-1<=N;l++){
            int r=l+K-1;
            int sum=pref[r]-pref[l-1];
            ok&=(sum%2==0 && dp[r][sum/2]>=l);
        }
        if(ok) ans.pb(K);
    }
    cout<<sz(ans)<<" ";
    for(auto x:ans){
        cout<<x<<" ";
    }
    cout<<endl;
}
 
int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int t;
    cin>>t;
    //t=1;
    while(t--){
        Solve();
    }
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 6484 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 13920 KB Output is correct
2 Correct 155 ms 23856 KB Output is correct

Subtask #3
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 319 ms 51708 KB Output is correct
2 Correct 512 ms 77176 KB Output is correct
3 Correct 548 ms 87116 KB Output is correct
4 Correct 787 ms 113344 KB Output is correct
5 Correct 1170 ms 175564 KB Output is correct
6 Correct 1507 ms 197488 KB Output is correct
7 Correct 1511 ms 200476 KB Output is correct