18 lines
221 B
C
18 lines
221 B
C
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#include <stdio.h>
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#include <stdlib.h>
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int main(void) {
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int x;
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scanf("%d",&x);
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if (x%3==0)
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printf("%d\n" , x);
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if (x%3==1)
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printf("%d\n", x-1);
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if (x%3==2)
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printf("%d\n", x+1);
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return EXIT_SUCCESS;
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}
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