#include <stdio.h></stdio.h>

#include <string.h></string.h>

int main() {

  char s[10];

  printf("Have you any problem? (yes/no)\n");

  scanf("%5s", s);

  while (strcmp(s, "yes") == 0) {

    printf("Have you a problem with electronic devices? (yes/no)\n");

    scanf("%5s", s);

    if (strcmp(s, "yes") == 0) {

      printf("Have you a problem with TV? (yes/no)\n");

      scanf("%5s", s);

      if (strcmp(s, "yes") == 0) {

        printf("You must to go to TV master\n");

      } else {

        printf("Have you a problem with computer? (yes/no)\n");

        scanf("%5s", s);

        if (strcmp(s, "yes") == 0)

          printf("You must go to sysadmin\n");

        else

          printf("I am sorry, I cannot help you.\n");

      }

    } else {

      printf("Have you a problem with teapot? (yes/no)\n");

      scanf("%5s", s);

      if (strcmp(s, "yes") == 0) {

        printf("Was you teapot broken? (yes/no)\n");

        scanf("%5s", s);

        if (strcmp(s, "yes") == 0)

          printf("You must buy our super glue\n");

        else

          printf("I am sorry, I cannot help you.\n");

      } else {

        printf("I am sorry, I cannot help you.\n");

      }

    }

    printf("Have you other problems? (yes/no)\n");

    scanf("%5s", s);

  }

  printf("Good bye\n");

  return 0;

}