Submission #305138

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
305138	2020-09-22 15:45:25	miss_robot	Palindromic Partitions (CEOI17_palindromic)	C++14	100 / 100	110 ms	26900 KiB

palindromic

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#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#define int long long
using namespace std;
const int N = 1e6, A = 987361726, B = 1e9+7;
int t, n, l, sol;
int h[N], p[N];
string s;
void pre(){
  h[0] = s[0];
  p[0] = 1;
  for(int i = 1; i < n; i++){
    h[i] = (h[i-1] * A + s[i]) % B;
    p[i] = (p[i-1] * A) % B;
  }
}
int hsh(int a, int b){
  if(!a) return h[b];
  return (h[b] - h[a-1] * p[b-a+1] + B*B) % B;
}
signed main(){
  cin.tie(0);
  ios::sync_with_stdio(0);
  cin >> t;
 
 
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• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 25 / 25
• Subtask 4: 40 / 40