oj.uz

Submission #707013

# Submission time Handle Problem Language Result Execution time Memory
707013 2023-03-08T09:29:04 Z ToroTN Palindromic Partitions (CEOI17_palindromic) C++14
100 / 100
 172 ms 26780 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
ll t,cnt_67,cnt_97,pow_97[1000005],pow_67[1000005],MOD=1e9+7,it;
ll cnt2_67,cnt2_97,cnt,type=-1;
string s;
int main()
{
    ios_base::sync_with_stdio(0),cin.tie(0);
    pow_97[0]=1;
    pow_67[0]=1;
    for(int i=1;i<=1000000;i++)
    {
        pow_97[i]=pow_97[i-1]*97;
        pow_97[i]%=MOD;
        pow_67[i]=pow_67[i-1]*67;
        pow_67[i]%=MOD;
    }
    cin >> t;
    while(t--)
    {
        cin >> s;
        cnt_97=0;
        cnt_67=0;
        cnt2_97=0;
        cnt2_67=0;
        it=0;
        cnt=0;
        type=-1;
        for(int i=0;i<s.size()/2;i++)
        {
            cnt_67+=pow_67[it]*s[i];
            cnt_67%=MOD;
            cnt_97+=pow_97[it]*s[i];
            cnt_97%=MOD;
            cnt2_67*=67;
            cnt2_67%=MOD;
            cnt2_67+=s[s.size()-1-i];
            cnt2_67%=MOD;
            cnt2_97*=97;
            cnt2_97%=MOD;
            cnt2_97+=s[s.size()-1-i];
            cnt2_97%=MOD;
            ++it;
            if(cnt2_67==cnt_67&&cnt2_97==cnt_97)
            {
                //printf("%d\n",i);
                cnt_67=0;
                cnt2_67=0;
                cnt_97=0;
                cnt2_97=0;
                cnt+=2;
                if(s.size()%2==0&&i==s.size()/2-1)
                {
                    type=0;
                }
                it=0;
            }
        }
        ++cnt;
        if(type==0)--cnt;
        printf("%lld\n",cnt);
    }
}

Compilation message

palindromic.cpp: In function 'int main()':
palindromic.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |         for(int i=0;i<s.size()/2;i++)
      |                     ~^~~~~~~~~~~
palindromic.cpp:53:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |                 if(s.size()%2==0&&i==s.size()/2-1)
      |                                   ~^~~~~~~~~~~~~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 15956 KB Output is correct
2 Correct 17 ms 15972 KB Output is correct
3 Correct 16 ms 15932 KB Output is correct
4 Correct 17 ms 15868 KB Output is correct
5 Correct 16 ms 15956 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 15956 KB Output is correct
2 Correct 17 ms 15972 KB Output is correct
3 Correct 16 ms 15932 KB Output is correct
4 Correct 17 ms 15868 KB Output is correct
5 Correct 16 ms 15956 KB Output is correct
6 Correct 17 ms 15928 KB Output is correct
7 Correct 17 ms 15884 KB Output is correct
8 Correct 16 ms 15928 KB Output is correct
9 Correct 17 ms 15972 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 15956 KB Output is correct
2 Correct 17 ms 15972 KB Output is correct
3 Correct 16 ms 15932 KB Output is correct
4 Correct 17 ms 15868 KB Output is correct
5 Correct 16 ms 15956 KB Output is correct
6 Correct 17 ms 15928 KB Output is correct
7 Correct 17 ms 15884 KB Output is correct
8 Correct 16 ms 15928 KB Output is correct
9 Correct 17 ms 15972 KB Output is correct
10 Correct 19 ms 16072 KB Output is correct
11 Correct 19 ms 15972 KB Output is correct
12 Correct 18 ms 16088 KB Output is correct
13 Correct 18 ms 15988 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 15956 KB Output is correct
2 Correct 17 ms 15972 KB Output is correct
3 Correct 16 ms 15932 KB Output is correct
4 Correct 17 ms 15868 KB Output is correct
5 Correct 16 ms 15956 KB Output is correct
6 Correct 17 ms 15928 KB Output is correct
7 Correct 17 ms 15884 KB Output is correct
8 Correct 16 ms 15928 KB Output is correct
9 Correct 17 ms 15972 KB Output is correct
10 Correct 19 ms 16072 KB Output is correct
11 Correct 19 ms 15972 KB Output is correct
12 Correct 18 ms 16088 KB Output is correct
13 Correct 18 ms 15988 KB Output is correct
14 Correct 172 ms 26780 KB Output is correct
15 Correct 103 ms 22164 KB Output is correct
16 Correct 172 ms 26212 KB Output is correct
17 Correct 94 ms 21704 KB Output is correct