48 lines
818 B
C
48 lines
818 B
C
#include <stdio.h>
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#include <stdlib.h>
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int calculate_fuel1(int mass)
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{
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return mass / 3 - 2;
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}
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int calculate_fuel2(int mass)
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{
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int fuel = mass / 3 - 2;
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if (fuel < 0)
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return 0;
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else
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return fuel + calculate_fuel2(fuel);
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}
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int main(void)
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{
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FILE *fp;
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char *line = NULL;
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size_t len = 0;
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ssize_t read;
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fp = fopen("../input", "r");
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if (fp == NULL)
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exit(EXIT_FAILURE);
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int fuel1 = 0;
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int fuel2 = 0;
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int mass;
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while ((read = getline(&line, &len, fp)) != -1) {
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mass = atoi(line);
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fuel1 += calculate_fuel1(mass);
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fuel2 += calculate_fuel2(mass);
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}
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printf("Solution for Part One: %d\n", fuel1);
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printf("Solution for Part Two: %d\n", fuel2);
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fclose(fp);
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if (line)
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free(line);
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return 0;
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}
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