Submission #916584

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
916584	2024-01-26 06:37:37	vjudge1	Palindromic Partitions (CEOI17_palindromic)	C++17	100 / 100	151 ms	11108 KiB

palindromic

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#include <bits/stdc++.h>
#define sz(x) ((int)x.size())
#define all(x) (x).begin(), (x).end()
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll mod=(ll)1e17-3;
int t,n;
char s[1000010];
int main() {
  cin>>t;
  int i,j;
  while(t--) {
    cin>>s;
    n=strlen(s);
    j=n;
    ll hl=0,hr=0,pw=1,cnt=0;
    for(i=0;i<n/2;i++) {
      hl=(26*hl+s[i]-'a')%mod;
      hr=(hr+(s[n-i-1]-'a')*pw%mod)%mod;
      if(hl==hr) {
        cnt+=2;
        j=i;
        hl=hr=0; pw=1;
      } else pw=26*pw%mod;
    }
 
 
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• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 25 / 25
• Subtask 4: 40 / 40