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

#define STATE_START 0
#define STATE_INWORD 1
#define STATE_INSPACE 2
#define STATE_DISPLAY 3
#define STATE_END 4

typedef int State;

int main(int argc, const char *argv[])
{
  FILE *f;
  int cc = 0, wc = 0, lc = 0;
  char ch = 0;
  State state = STATE_START;

  if(argc > 2) {
      fprintf(stderr, "Usage:wc [filename]\n");
      fprintf(stderr, "     :wc < filename\n");
    exit(1);
  }

  if(argc == 2) {
    f = fopen(argv[1], "r");
    if(f == NULL){
      fprintf(stderr, "Can't read %s\n", argv[1]);
      exit(1);
    }
  }else if(argc == 1) {
    f = stdin;
  }

  while(1){
    if(state == STATE_START){
      ch = getc(f);
      state = STATE_INSPACE;
    }
    if(state == STATE_INWORD){
      if(ch == EOF){
        state = STATE_DISPLAY;
      }else if(ch == '\n'){
        ch = getc(f);
        cc++;
        wc++;
        lc++;
        state = STATE_INSPACE;
      }else if(ch == '\t' || ch == ' '){
        ch = getc(f);
        cc++;
        wc++;
        state = STATE_INSPACE;
      }else{
        ch = getc(f);
        cc++;
        state = STATE_INWORD;
      }
    }else if(state == STATE_INSPACE){
      if(ch == EOF){
        state = STATE_DISPLAY;
      }else if(ch == '\n'){
        ch = getc(f);
        cc++;
        lc++;
        state = STATE_INSPACE;
      }else if(ch == '\t' || ch == ' '){
        ch = getc(f);
        cc++;
        state = STATE_INSPACE;
      }else{
        ch = getc(f);
        cc++;
        state = STATE_INWORD;
      }
    }else if(state == STATE_DISPLAY){
      printf("%d %d %d\n", lc, wc, cc);
      state = STATE_END;
    }else if(state == STATE_END){
      break;
    }else{
      fprintf(stderr, "error\n");
      exit(1);
    }
  }

  return 0;
}