#include <stdio.h>
void main(void){
	int n = 0;
	scanf("%d" , &n);
	char sleeptime[1000000] = "a";
	scanf("%s",sleeptime);
	int i = 1;
	while(sleeptime[i] != '\n'){
		if(sleeptime[i] == 'o' && sleeptime[i-1] == 'x'){
			printf("%d ", i+1);
		}
		i++;
	}
}