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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define N 5000
int numbers[N];
void ParseInput(char *filepath)
{
char ch;
FILE *fp;
fp = fopen(filepath, "r");
if (fp == NULL)
{
perror("Error while opening the file.\n");
exit(EXIT_FAILURE);
}
int i = 0;
int n = 0;
char *str = malloc(sizeof(char)*N);
while((ch= fgetc(fp)) != EOF)
{
if(ch != '\n')
{
str[i] = ch;
i += 1;
}
else
{
i = 0;
numbers[n] = atoi(str);
n += 1;
memset(str, ' ', sizeof(char)*N);
}
}
free(str);
fclose(fp);
}
void PrintNumbers()
{
for(int i=0; i<N; i++)
{
printf("%d\n", numbers[i]);
}
}
int main (void)
{
ParseInput("input-1.txt");
/* Part One
int bigger = 0;
for(int i=1; i<N; i++)
{
if(numbers[i] > numbers[(i-1)])
bigger += 1;
}
printf("Answer: %d", bigger);
*/
// Part Two
int bigger = 0;
for(int i = 3; i<N; i++)
{
if(
(numbers[i-2] + numbers[i-1] + numbers[i]) >
(numbers[i-3] + numbers[i-2] + numbers[i -1]))
bigger += 1;
}
printf("Answer: %d", bigger);
return 0;
}
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