#include <stdio.h>

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

char* strrpl(char *str, char* find, char *replace)
{
    int i;
    char *pt = strstr(str, find), *firstStr;
    if (!pt) return str;
    firstStr = calloc(100, sizeof(char));
    // copy just until i find what i need to replace
    // i tried to specify the length of firstStr just with pt - str
    strncpy(firstStr, str, strlen(str) - strlen(pt));  

    strcat(firstStr, replace);
    strcat(firstStr, pt + strlen(find));

    for(i = 0; i < strlen(firstStr); i++)
        str[i] = firstStr[i];
    return str;
}

int main()
{
    char *s, *s1, *s2;
    s = (char* )malloc(100 * sizeof(char));
    s1 = (char* )malloc(100 * sizeof(char));
    s2 = (char* )malloc(100 * sizeof(char));
    scanf("%s", s1);
    scanf("%s", s2);
    scanf("%s", s);

    printf("%s", strrpl(s1, s2, s));
    return 0;
}