38 lines
997 B
C
38 lines
997 B
C
#include "_.h"
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int main(int argc, char **argv) {
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if (argc != 2)
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return 1;
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char *input = argv[1];
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char **inputs = str_split(strdup(input), '\n');
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int count_safe = 0;
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for (int i = 0; inputs[i] != NULL; i++) {
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char **inputs_space = str_split(strdup(inputs[i]), ' ');
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int is_safe = 1;
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int increase = 0;
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for (int j = 0; inputs_space[j + 1] != NULL; j++) {
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int number = atoi(inputs_space[j]);
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int next_number = atoi(inputs_space[j + 1]);
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if (number - next_number > 0 && number - next_number < 4 && (increase == 1 || increase == 0)) {
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increase = 1;
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}
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else if (number - next_number < 0 && number - next_number > -4 && (increase == -1 || increase == 0)) {
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increase = -1;
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}
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else {
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is_safe = 0;
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}
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}
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if (is_safe == 1)
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count_safe++;
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}
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printf("safe: %d\n", count_safe);
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return 0;
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}
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