제출 #134890

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
134890		qrno	회문 (APIO14_palindrome)	C++14	8 / 100	1066 ms	61464 KiB

palindrome

#include <iostream>
#include <string>
#include <map>
using namespace std;

map <string, int> M;

bool isPalindrome(string s) {
    for (int i = 0; i < s.size(); i++) {
        if (s[i] != s[s.size()-i-1])
            return false;
    }
    return true;
}

int main() {

    string a;
    cin >> a;
    
    int ans = 0;

    for (int i = 0; i < a.size(); i++) {
        for (int j = i; j < a.size(); j++) {
            string s = "";
            for (int m = i; m <= j; m++) {
                s += a[m];
            }
            if (isPalindrome(s)) {
                M[s]++;
                int m = s.size();

                ans = max(ans, m*M[s]);
            }
        }
    }

    cout << ans << endl;

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

palindrome.cpp: In function 'bool isPalindrome(std::__cxx11::string)':
palindrome.cpp:9:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < s.size(); i++) {
                     ~~^~~~~~~~~~
palindrome.cpp: In function 'int main()':
palindrome.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < a.size(); i++) {
                     ~~^~~~~~~~~~
palindrome.cpp:24:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int j = i; j < a.size(); j++) {
                         ~~^~~~~~~~~~

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