#include "sylib.h"

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

static int read_char_normalized(void) {
  int ch = getchar();
  if (ch == '\r') {
    int next = getchar();
    if (next != '\n' && next != EOF) {
      ungetc(next, stdin);
    }
    return '\n';
  }
  return ch;
}

static float read_float_token(void) {
  char buffer[256];
  if (scanf("%255s", buffer) != 1) {
    return 0.0f;
  }
  return strtof(buffer, NULL);
}

int getint(void) {
  int value = 0;
  if (scanf("%d", &value) != 1) {
    return 0;
  }
  return value;
}

int getch(void) {
  int ch = read_char_normalized();
  return ch == EOF ? 0 : ch;
}

float getfloat(void) { return read_float_token(); }

int getarray(int a[]) {
  int n = getint();
  for (int i = 0; i < n; ++i) {
    a[i] = getint();
  }
  return n;
}

int getfarray(float a[]) {
  int n = getint();
  for (int i = 0; i < n; ++i) {
    a[i] = getfloat();
  }
  return n;
}

void putint(int x) { printf("%d", x); }

void putch(int x) { putchar(x); }

void putfloat(float x) { printf("%a", (double)x); }

void putarray(int n, const int a[]) {
  printf("%d:", n);
  for (int i = 0; i < n; ++i) {
    printf(" %d", a[i]);
  }
  putchar('\n');
}

void putfarray(int n, const float a[]) {
  printf("%d:", n);
  for (int i = 0; i < n; ++i) {
    printf(" %a", (double)a[i]);
  }
  putchar('\n');
}

void starttime(void) {}

void stoptime(void) {}