64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define LOOP_COUNT 1000000
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#define EXPECTED_CHECKSUM 4600001
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typedef struct {
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int32_t len;
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const char **data;
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} vec_string;
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static int32_t configured_loop_count(void) {
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int32_t value = LOOP_COUNT;
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if (scanf("%d", &value) != 1 || value <= 0) {
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return LOOP_COUNT;
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}
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return value;
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}
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static const char *configured_target(int argc, char **argv) {
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return argc > 1 ? argv[1] : "omega";
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}
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static vec_string make_words(void) {
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vec_string values;
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values.len = 5;
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values.data = malloc(sizeof(char *) * (size_t)values.len);
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if (values.data == NULL) {
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fputs("allocation failed\n", stderr);
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exit(2);
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}
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values.data[0] = "alpha";
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values.data[1] = "omega";
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values.data[2] = "delta";
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values.data[3] = "omega";
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values.data[4] = "sigma";
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return values;
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}
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static int32_t vec_string_eq_loop(int32_t limit, const char *target) {
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vec_string words = make_words();
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int32_t i = 0;
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int32_t acc = 1;
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while (i < limit) {
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const char *current = words.data[i % words.len];
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acc = strcmp(current, target) == 0 ? acc + 7 : acc + 3;
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acc = acc > 1000000000 ? acc - 1000000000 : acc;
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i = i + 1;
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}
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free(words.data);
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return acc;
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}
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int main(int argc, char **argv) {
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int32_t result = vec_string_eq_loop(configured_loop_count(), configured_target(argc, argv));
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printf("%d\n", result);
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return result == EXPECTED_CHECKSUM ? 0 : 1;
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}
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