제출 #916472

#제출 시각아이디문제언어결과실행 시간메모리
916472penguin133Palindromic Partitions (CEOI17_palindromic)C++17
15 / 100
1 ms644 KiB
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

string s;
const int mod = 1e18 - 1;

int slv(int l, int r){
	if(l > r)return 0;
	if(l == r)return 1;
	int cur = 1, cnt = 0, cnt2 = 0;
	for(int i = l, j = r; i <= j; i++, j--){
		cnt = cnt * 26 + (s[i] - 'a');
		cnt2 += cur * (s[j] - 'a');
		cur *= 26; cur %= mod;
		cnt %= mod; cnt2 %= mod;
		if(cnt == cnt2)return slv(i + 1, j - 1) + 2;
	}
	return 1;
}

void solve(){
	cin >> s;
	cout << slv(0, (int)s.length() - 1) << '\n';
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

컴파일 시 표준 에러 (stderr) 메시지

palindromic.cpp:36:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   36 | main(){
      | ^~~~
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