26 lines
344 B
C
26 lines
344 B
C
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#include <stdio.h>
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// Function prototypes
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int dividable(int n);
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int main(void)
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{
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// Initialize variables and get input
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int n, sum = 0;
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scanf("%d", &n);
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for (int i = 1; i < n; i++) {
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if (dividable(i)) {
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sum += i;
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}
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}
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printf("%d\n", sum * sum);
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return 0;
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}
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int dividable(int n) {
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return (n % 3 == 0 && n % 7 == 0) ? 1 : 0;
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}
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