Created
June 10, 2020 05:32
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#include <iostream> | |
using namespace std; | |
int is_prime[65]; | |
long long countSpecialBits(long long L, long long R) { | |
long long count = 0; | |
for (long long i = L; i <= R; i++) { | |
for (int j = 0; j < 64; j++) { | |
if ((i & (1 << j)) && is_prime[j]) { | |
count++; | |
} | |
} | |
} | |
return count; | |
} | |
int main() { | |
for(int i = 0; i < 65; i++) | |
is_prime[i] = false; | |
is_prime[2] = true; | |
is_prime[3] = true; | |
is_prime[5] = true; | |
is_prime[7] = true; | |
is_prime[11] = true; | |
is_prime[13] = true; | |
is_prime[17] = true; | |
is_prime[19] = true; | |
is_prime[23] = true; | |
is_prime[29] = true; | |
is_prime[31] = true; | |
is_prime[37] = true; | |
is_prime[41] = true; | |
is_prime[43] = true; | |
is_prime[47] = true; | |
is_prime[53] = true; | |
is_prime[59] = true; | |
is_prime[61] = true; | |
is_prime[67] = true; | |
is_prime[71] = true; | |
is_prime[73] = true; | |
is_prime[79] = true; | |
is_prime[83] = true; | |
is_prime[89] = true; | |
is_prime[97] = true; | |
int T; | |
long long L, R; | |
cin >> T; | |
for (int i = 0; i < T; i++) { | |
cin >> L >> R; | |
cout << countSpecialBits(L, R) << '\n'; | |
} | |
return 0; | |
} | |
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