oj.uz

답안 #116252

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
116252 2019-06-11T14:43:50 Z Meloric Palindromic Partitions (CEOI17_palindromic) C++14
0 / 100
 20 ms 8412 KB 
#include <bits/stdc++.h>
#define pb push_back
#define X first
#define Y second
#define pii pair<int, int>

using namespace std;
int mod = 1e9+7;
int omod = 1e9+9;
vector<int> mem, omem;

bool same(int l, int r, int len, vector<int>&wrd){
    for(int i = 0; i<=len; i++){
        if(wrd[l+i] != wrd[r+i-len])return false;
    }
    return true;
}
int dp(int l, int r, vector<int>&wrd){
    if(r<l)return 0;
    int hsh1, hsh2, hsh3, hsh4;hsh1 = 0; hsh2=0;
    hsh3 = 0; hsh4 = 0;
    for(int i = 0; i+l < r-i ;i++){
        hsh1*=31; hsh1+= wrd[l+i];
        hsh3*=31; hsh3+= wrd[l+i];
        hsh2+= wrd[r-i]*mem[i];
        hsh4+= wrd[r-i]*omem[i];
        hsh1%=mod; hsh2%=mod; hsh3%=omod; hsh4%=omod;
        if(hsh1 == hsh2 && hsh3 == hsh4 && same(l, r, i, wrd))return dp(l+i+1, r-i-1, wrd)+2;
    }
    return 1;
}
void solve(){
    string in; vector<int> wrd;
    cin >> in;
    for(auto i : in)wrd.pb(i-'a');
    //for(int i : wrd)cout << i <<' ';
    cout << dp(0, wrd.size()-1, wrd)<< '\n';
}
void prec(){
    int pw = 1;
    int opw = 1;
    for(int i = 0; i< 1e6; i++){
        mem.pb(pw);
        omem.pb(opw);
        pw*=31;
        opw*=31;
        if(pw>mod)pw-=mod;
        if(opw>omod)opw-=omod;
    }
}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int t; cin >> t;
    prec();
    while(t--){
        solve();
    }
    return 0;
}

Subtask #1
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 20 ms 8412 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 20 ms 8412 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 20 ms 8412 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 20 ms 8412 KB Output isn't correct
2 Halted 0 ms 0 KB -