62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
/* ex1-c: Advent2020 game, day 12/game 1
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*/
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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 ABS(i) ((i)>=0?(i):(-i))
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int main(ac, av)
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int ac;
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char **av;
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{
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char line[512], command;
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unsigned val, direction=90, real;
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int x=0, y=0;
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while (fgets(line, sizeof line, stdin)) {
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command=*line;
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val=atoi(line+1);
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switch (command) {
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case 'N':
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real=0;
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break;
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case 'E':
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real=90;
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break;
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case 'S':
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real=180;
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break;
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case 'W':
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real=270;
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break;
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case 'F':
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real=direction;
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break;
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case 'L':
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val=360-val;
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case 'R':
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direction=(direction+val)%360;
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}
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if (command != 'R' && command != 'L') {
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switch (real) {
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case 0:
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y+=val;
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break;
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case 90:
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x+=val;
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break;
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case 180:
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y-=val;
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break;
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case 270:
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x-=val;
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break;
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}
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}
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}
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printf("%s : res=%d\n", *av, ABS(x)+ABS(y));
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exit (0);
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}
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