提出 #69833370

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ソースコード 拡げる

#include <bits/stdc++.h>
using namespace std;
int main()
{
	string s;
	cin >> s;
	int n = 0, m = 0;
	n++;
	for (int i = 1; i < s.size(); i++)
	{
		if (s[i] == s[0])
			n++;
		else
			m = i;
	}
	if (n == 1)
	{
		cout << s[0] << endl;
	}
	else
	{
		cout << s[m] << endl;
	}
	return 0;
}

提出情報

コンパイルエラー

Main.cpp: In function ‘int main()’:
Main.cpp:9:27: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
    9 |         for (int i = 1; i < s.size(); i++)
      |                         ~~^~~~~~~~~~

ジャッジ結果