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Submission #939155

# Submission time Handle Problem Language Result Execution time Memory
939155 2024-03-06T06:19:06 Z vjudge1 Palindromic Partitions (CEOI17_palindromic) C++17
100 / 100
 50 ms 3332 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(), x.end()
#define size(x) (int)x.size()

template<class S, class T>
bool chmin(S &a, const T &b) {
	return a > b ? (a = b) == b : false;
}
template<class S, class T>
bool chmax(S &a, const T &b) {
	return a < b ? (a = b) == b : false;
}

const int p = 31;
const int m = 1e9 + 9;

signed main() {
	cin.tie(nullptr)->sync_with_stdio(false);
	int t; cin >> t;
	while (t--) {
		string s; cin >> s;
		int l = 0, r = size(s) - 1;
		int res = 0;
		while (l < r) {
			int l_hash = s[l++] - 'a' + 1, r_hash = s[r--] - 'a' + 1, p_pow = p;
			while (l < r && l_hash != r_hash) {
				l_hash = (l_hash + (s[l] - 'a' + 1) * p_pow % m) % m;
				r_hash = r_hash * p % m;
				r_hash = (r_hash + s[r] - 'a' + 1) % m;
				l++, r--;
				p_pow = p_pow * p % m;
			}
			if (l_hash == r_hash) res += 2;
			else if (l != r) res++;
		}
		if (l == r) res++;
		cout << res << '\n';
	}
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 392 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 392 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 43 ms 3332 KB Output is correct
15 Correct 24 ms 3156 KB Output is correct
16 Correct 50 ms 3284 KB Output is correct
17 Correct 18 ms 1980 KB Output is correct