#include <stdio.h>

#define MAX_STR 128
int main()
{
	int n, m;
	char str[MAX_STR];
	char tmp;

	scanf("%s", str);
	scanf("%d %d", &n, &m);

	tmp = str[n];
	str[n] = str[m];
	str[m] = tmp;

	printf("%s\n", str);

	return 0;
}