Submission #882828

#	Time	Username	Problem	Language	Result	Execution time	Memory
882828		NintsiChkhaidze	Palindromes (info1cup18_palindromes)	C++17	100 / 100	255 ms	14156 KiB

palindromes

#include <bits/stdc++.h>
#define s second
#define f first
#define ll long long
#define pb push_back
#define pii pair <int,int>
using namespace std;

const int N = 1e6 + 5,mod = 1e9 + 7;

ll ans;
int a[N];

signed main (){
	ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);

	int n;
	cin>>n;

	for (int i = 1; i <= n; i++){
		cin >> a[i];

		int old = a[i];
		vector <int> vec;
		while (a[i] > 0){
			vec.pb(a[i] % 10);
			a[i] /= 10;
		}

		int ch=1,len = vec.size();
		for (int j =0;j < vec.size()/2;j++){
			if (vec[j] != vec[len - 1 - j]) ch=0;
		}
		if (ch) ans += old;
	}
	cout<<ans;
}

Compilation message (stderr)

palindromes.cpp: In function 'int main()':
palindromes.cpp:31:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |   for (int j =0;j < vec.size()/2;j++){
      |                 ~~^~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 30 / 30
• Subtask 4: 35 / 35