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Comparing

Mutate

#include <stdio.h>

int main(void) {
  printf("Hello world!\n");
  return 0;
}
#include <iostream>

int main(void) {
  std::cout << "Hello world!" << std::endl;
  return 0;
}
#include <iostream>

int main(void) {
  std::cout << "Hello world!" << std::endl;
  return 0;
}
#include <iostream>

int main(void) {
  std::cout << "Hello world!" << std::endl;
  return 0;
}