Anonymous user
Sum multiples of 3 and 5: Difference between revisions
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Line 493:
BigInt sum35(in BigInt n) pure nothrow {
static BigInt sumMul(in BigInt n, in int f) pure nothrow {
immutable n1 = (f==n?n:(n - 1) ) / f;
return f * n1 * (n1 + 1) / 2;
}
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