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Submission #46982

# Submission time Handle Problem Language Result Execution time Memory
46982 2018-04-25T16:54:09 Z dqhungdl Palindromic Partitions (CEOI17_palindromic) C++17
100 / 100
 149 ms 42804 KB 
#include <bits/stdc++.h>
using namespace std;

const int64_t base=26,mod=1e9;
int64_t T,n,M[1000005],H[1000005];
char s[1000005];

int64_t GetHash(int64_t l,int64_t r)
{
    return (H[r]-H[l-1]*M[r-l+1]+mod*mod)%mod;
}

int main()
{
    ios_base::sync_with_stdio(false);
    //freopen("TEST.INP","r",stdin);
    M[0]=1;
    for(int64_t i=1;i<=1e6;i++)
        M[i]=M[i-1]*base%mod;
    cin>>T;
    while(T--)
    {
        cin>>s+1;
        n=strlen(s+1);
        for(int64_t i=1;i<=n;i++)
            H[i]=(H[i-1]*base+s[i])%mod;
        int64_t l=1,r=n,res=0;
        while(l<=r)
        {
            int64_t len=1;
            while(l+len-1<r-len+1&&GetHash(l,l+len-1)!=GetHash(r-len+1,r))
                len++;
            if(l+len-1>=r-len+1)
            {
                res++;
                break;
            }
            res+=2;
            l+=len;
            r-=len;
        }
        cout<<res<<"\n";
    }
}

Compilation message

palindromic.cpp: In function 'int main()':
palindromic.cpp:23:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         cin>>s+1;
              ~^~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 8184 KB Output is correct
2 Correct 16 ms 8304 KB Output is correct
3 Correct 16 ms 8360 KB Output is correct
4 Correct 15 ms 8360 KB Output is correct
5 Correct 16 ms 8380 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 8184 KB Output is correct
2 Correct 16 ms 8304 KB Output is correct
3 Correct 16 ms 8360 KB Output is correct
4 Correct 15 ms 8360 KB Output is correct
5 Correct 16 ms 8380 KB Output is correct
6 Correct 15 ms 8444 KB Output is correct
7 Correct 15 ms 8448 KB Output is correct
8 Correct 15 ms 8452 KB Output is correct
9 Correct 15 ms 8500 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 8184 KB Output is correct
2 Correct 16 ms 8304 KB Output is correct
3 Correct 16 ms 8360 KB Output is correct
4 Correct 15 ms 8360 KB Output is correct
5 Correct 16 ms 8380 KB Output is correct
6 Correct 15 ms 8444 KB Output is correct
7 Correct 15 ms 8448 KB Output is correct
8 Correct 15 ms 8452 KB Output is correct
9 Correct 15 ms 8500 KB Output is correct
10 Correct 17 ms 8632 KB Output is correct
11 Correct 15 ms 8732 KB Output is correct
12 Correct 17 ms 8804 KB Output is correct
13 Correct 16 ms 8904 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 8184 KB Output is correct
2 Correct 16 ms 8304 KB Output is correct
3 Correct 16 ms 8360 KB Output is correct
4 Correct 15 ms 8360 KB Output is correct
5 Correct 16 ms 8380 KB Output is correct
6 Correct 15 ms 8444 KB Output is correct
7 Correct 15 ms 8448 KB Output is correct
8 Correct 15 ms 8452 KB Output is correct
9 Correct 15 ms 8500 KB Output is correct
10 Correct 17 ms 8632 KB Output is correct
11 Correct 15 ms 8732 KB Output is correct
12 Correct 17 ms 8804 KB Output is correct
13 Correct 16 ms 8904 KB Output is correct
14 Correct 149 ms 27448 KB Output is correct
15 Correct 86 ms 32736 KB Output is correct
16 Correct 135 ms 41876 KB Output is correct
17 Correct 82 ms 42804 KB Output is correct