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Update primes.cpp

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This commit is contained in:
Anthony Wang 2020-05-02 21:29:36 -05:00
parent 797b463ad1
commit 642183438c
1 changed files with 4 additions and 3 deletions
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7
Math/primes.cpp
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@ -1,8 +1,9 @@
constexpr int sieve_size = 1e7;
bitset<sieve_size + 1> bs;
int sieve_size;
bitset<10000001> bs;
vector<int> pr;
void sieve() {
void sieve(int size) {
sieve_size = size + 1;
bs.set(); bs[0] = bs[1] = 0;
for (ll i = 2; i < sieve_size; ++i) if (bs[i]) {
for (ll j = i * i; j < sieve_size; j += i) bs[j] = 0;