Submission #209429

#	Time	Username	Problem	Language	Result	Execution time	Memory
209429		model_code	Palindromic FizzBuzz (NOI19_palindrome)	C++17	100 / 100	43 ms	1912 KiB

palindrome

#include <bits/stdc++.h>
using namespace std;

long long S, E;

bool is_palindrome(long long x) {
	vector<int> v;
	while (x > 0) {
		v.push_back(x%10);
		x /= 10;
	}
	for (int i = 0; i < v.size(); i++) if (v[i] != v[v.size() - i - 1]) return false;
	return true;
}

int main() {
	scanf("%lld%lld", &S, &E);
	for (long long i = S; i <= E; i++) {
		if (is_palindrome(i)) printf("Palindrome!\n");
		else printf("%lld\n", i);
	}
}

Compilation message (stderr)

palindrome.cpp: In function 'bool is_palindrome(long long int)':
palindrome.cpp:12:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < v.size(); i++) if (v[i] != v[v.size() - i - 1]) return false;
                  ~~^~~~~~~~~~
palindrome.cpp: In function 'int main()':
palindrome.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld", &S, &E);
  ~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 14 / 14
• Subtask 4: 8 / 8
• Subtask 5: 9 / 9
• Subtask 6: 20 / 20
• Subtask 7: 31 / 31