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

int main(int argc, char *argv[]) {
  if (argc < 2) {
    printf("Usage: %s FILENAME\n", argv[0]);
    exit(1);
  }
  FILE *fp = fopen(argv[1],"r");
  int buf[2];

  if(fp == NULL){
    printf("CANNOT open file");
    exit(1);
  }
  while(1){
    int nread = fread(buf,sizeof(int),2,fp);
    if(nread < 2){
      break;
    }

    for(int j=0;j<buf[0];j++){
      fwrite((char)buf[1],sizeof(char),1,stdout);
    }
  }


  fclose(fp);
  return 0;
}