Submission #425468

#	Time	Username	Problem	Language	Result	Execution time	Memory
425468		errorgorn	Palindromic FizzBuzz (NOI19_palindrome)	C++17	100 / 100	24 ms	1812 KiB

palindrome

#include <cstdio>
#include <vector>
using namespace std;
long long n,m;
vector<int> v;
bool p(long long i){
  v.clear();
  while (i!=0){
    v.push_back(i%10);
    i/=10;
  }
  for (int x=0;x<(v.size()+1)>>1;x++){
    if (v[x]!=v[v.size()-1-x]) return false;
  }
  return true;
}
int main(){
  scanf("%lld%lld",&n,&m);
  for (long long x=n;x<=m;x++){
    (p(x)? printf("Palindrome!\n"): printf("%lld\n",x));
  }
}

Compilation message (stderr)

palindrome.cpp: In function 'bool p(long long int)':
palindrome.cpp:12:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |   for (int x=0;x<(v.size()+1)>>1;x++){
      |                ~^~~~~~~~~~~~~~~~
palindrome.cpp: In function 'int main()':
palindrome.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |   scanf("%lld%lld",&n,&m);
      |   ~~~~~^~~~~~~~~~~~~~~~~~

• 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