#include <stdio.h>
#include <string.h>

int main(){
	char ans[10] = "yukicoder";
	
	char memo[10];
	scanf("%s",memo);
	
	int len = strlen(ans);
	
	for(int i = 0;i < len;i ++){
		if(ans[i] != memo[i]){
			printf("%c",ans[i]);
		}
	}
}