#include <cstring> #include <cstdio> char n[100]; int c1, c2; int main () { while (true) { scanf("%s %d %d", n, &c1, &c2); if (n[0] == '0' && n[1] == NULL && c1 == 0 && c2 == 0) return 0; for (int i=0; i<strlen(n); ++i) { if (n[i] == c1+'0') n[i] = c2+'0'; } int offset = 0; for (int i=0; ;++i) { if (n[i] != '0') break; offset++; } if (offset == strlen(n)) printf("0\n"); else printf("%s\n", n+offset); } return 0; }