提出 #43057581

---

ソースコード 拡げる

#include <bits/stdc++.h>
#define lll __int128
#define ull unsigned long long
#define ulll unsigned lll
#define ll long long
#define lchild 2*node
#define rchild lchild+1
#define mx 200007
#define endl '\n'
#define inf 10000000
#define mod 1000000007
#define pii pair<int,int>
#define ld long double
#define ff first
#define ss second
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
typedef tree<int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_multiset;

bool isPal(string s)
{
	for(int i=0;i<s.size()/2;i++)
		if(s[i]!=s[s.size()-i-1])
			return 0;

	return 1;
}

int main ()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int tc= 1;
    // cin>>tc;

    while(tc--)
    {
    	int n;
    	cin>>n;

    	string s[n+5];

    	for(int i=0;i<n;i++)
    		cin>>s[i];

    	for(int i=0;i<n;i++)
    	{
    		for(int j=i+1;j<n;j++)
    		{
    			if(isPal(s[i]+s[j]) or isPal(s[j]+s[i]))
    				return cout<<"Yes\n", 0;
    		}
    	}

    	cout<<"No\n";
    }

}

提出情報

コンパイルエラー

./Main.cpp: In function ‘bool isPal(std::string)’:
./Main.cpp:30:15: warning: comparison of integer expressions of different signedness: ‘int’ and ‘std::__cxx11::basic_string<char>::size_type’ {aka ‘long unsigned int’} [-Wsign-compare]
   30 |  for(int i=0;i<s.size()/2;i++)
      |              ~^~~~~~~~~~~

ジャッジ結果