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0326_Power_of_Three.cpp
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25 lines (25 loc) · 1.66 KB
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// ███████╗ █████╗ ███╗ ██╗ ██████╗ █████╗ ██████╗ ██████╗ ██╗ ██╗
// ██╔════╝ ██╔══██╗ ████╗ ██║ ██╔══██╗ ██╔══██╗ ██╔══██╗ ██╔══██╗ ██║ ██║
// ███████╗ ███████║ ██╔██╗ ██║ ██║ ██║ ███████║ ██████╔╝ ██████╔╝ ███████║
// ╚════██║ ██╔══██║ ██║╚██╗██║ ██║ ██║ ██╔══██║ ██╔═██╗ ██╔══██╗ ██╔══██║
// ███████║ ██║ ██║ ██║ ╚████║ ██████╔╝ ██║ ██║ ██║ ██╗ ██████╔╝ ██║ ██║
// ╚══════╝ ╚═╝ ╚═╝ ╚═╝ ╚═══╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ ╚═╝ ╚═╝
#pragma GCC optimize("Ofast", "inline", "ffast-math", "unroll-loops","no-stack-protector")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native", "f16c")
auto init = []() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
return 'c';
}();
class Solution {
public:
bool isPowerOfThree(int n) {
int num = 0;
for(int i = 0; pow(3,i) <= n; i++){
num = pow(3,i);
if(num == n) return true;
}
return false;
}
};