35 lines
815 B
C
35 lines
815 B
C
#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define LOOP_COUNT 1000000
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#define EXPECTED_CHECKSUM 345000001
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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 int32_t parse_loop(int32_t limit, const char *text) {
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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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acc = acc + (int32_t)strtol(text, NULL, 10);
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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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return acc;
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}
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int main(int argc, char **argv) {
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const char *text = argc > 1 ? argv[1] : "12345";
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int32_t result = parse_loop(configured_loop_count(), text);
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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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