Submission #164437

#	Time	Username	Problem	Language	Result	Execution time	Memory
164437		kungfulon	Palindromic Partitions (CEOI17_palindromic)	C++14	15 / 100	10 ms	376 KiB

palindromic

///Phạm Nguyễn Tuấn Hoàng///
#include <bits/stdc++.h>
#define rep(i,a,b) for(int i = (a);i <= (b);i++)
#define repd(i,a,b) for(int i = (a);i >= (b);i--)
#define F first
#define S second
#define PB push_back
#define Task ""
using namespace std;
//template <class T> inline read(T &a){a = 0;char c;bool nega = 0;while(!isdigit(c = getchar()) && c != '-');if(c == '-') nega = 1,c = getchar();a = c - 48;while(isdigit(c = getchar()))a = a * 10 + c - 48;if(nega) a = -a;}
//template <class T> inline writep(T a){if(a > 9) writep(a / 10);putchar(a % 10 + 48);}
//template <class T> inline write(T a){if(a < 0) putchar('-'),a = -a;writep(a);putchar(' ');}
//template <class T> inline writeln(T a){write(a);putchar('\n');}


int main()
{
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
//    freopen(Task".inp","r",stdin);
//    freopen(Task".out","w",stdout);
    int T;
    cin >> T;
    while(T--)
    {
        string s;
        cin >> s;
        int n = s.size();
        s = ' ' + s;
        int End = n,Begin = 1,cnt = 0,last = 0;
        vector<int> df(27),ds(27);
        while(End > Begin)
        {
            bool check = 1;
            df[s[End] -'a']++;
            ds[s[Begin] - 'a']++;
            rep(i,0,'z' - 'a') if(df[i] != ds[i]) check = 0;
            if(check)
            {
                cnt += 2;
                rep(i,0,'z' - 'a') df[i] = ds[i] = 0;
                last = End;
            }
            End--,Begin++;
        }
        cout << cnt + (last != Begin) << '\n';
    }
    return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 0 / 20
• Subtask 3: 0 / 25
• Subtask 4: 0 / 40