Submission #1103893

#	Time	Username	Problem	Language	Result	Execution time	Memory
1103893		ezzzay	Palindromic Partitions (CEOI17_palindromic)	C++14	100 / 100	169 ms	10800 KiB

palindromic

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ff first
#define ss second
#define pb push_back
vector<int>ans;
void fun(){
    string s;
    cin>>s;
    int n=s.size();
    int a=0,b=0;
    int x=-1;
    int p=0;
    int k=1;
    int m=1e9+7;
    int mlt=1;
    for(int i=0;i<n/2;i++){
        a= a*(31)+(s[i]);
        a%=m;
        
        b=(s[n-i-1])*mlt+b;
        b%=m;
        
        mlt*=31;
        mlt%=m;
        if(a==b){
            x=i;
            a=0,b=0;
            k=1;
            p+=2;
            mlt=1;
        }
        //cout<<a<<" "<<b<<endl;
    }
    if(n%2 or x<n/2-1)p++;
    ans.pb(p);
}
signed main(){
    int t;
    cin>>t;
    while(t--)fun();
    for(auto a:ans)cout<<a<<endl;
}

Compilation message (stderr)

palindromic.cpp: In function 'void fun()':
palindromic.cpp:15:9: warning: variable 'k' set but not used [-Wunused-but-set-variable]
   15 |     int k=1;
      |         ^

• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 25 / 25
• Subtask 4: 40 / 40