33 lines
653 B
C
33 lines
653 B
C
#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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int main(void) {
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FILE *fp = fopen("input.txt", "r");
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char buf[16] = {0}, *np;
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unsigned n, aim = 0, h = 0, v = 0;
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while (fgets(buf, 16, fp) != NULL) {
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np = strchr(buf, ' ');
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assert(np != NULL);
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np++;
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sscanf(np, "%u", &n);
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switch (buf[0]) {
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case 'd':
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aim += n;
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break;
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case 'u':
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aim -= n;
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break;
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case 'f':
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h += n;
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v += aim * n;
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break;
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}
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}
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printf("Answer: %u\n", h * v);
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}
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