c++ flush stdin
#include <stdio.h>
void flush_stdin() {
int c;
while ((c = getchar()) != '\n' && c != EOF) {}
}
int main() {
flush_stdin();
return 0;
}
#include <stdio.h>
void flush_stdin() {
int c;
while ((c = getchar()) != '\n' && c != EOF) {}
}
int main() {
flush_stdin();
return 0;
}