Emuskald needs a fence around his farm, but he is too lazy to build it himself. So he purchased a fence-building robot.
He wants the fence to be a regular polygon. The robot builds the fence along a single path, but it can only make fence corners at a single angle a.
Will the robot be able to build the fence Emuskald wants? In other words, is there a regular polygon which angles are equal to a?
The first line of input contains an integer t (0 < t < 180) — the number of tests. Each of the following t lines contains a single integer a (0 < a < 180) — the angle the robot can make corners at measured in degrees.
For each test, output on a single line "YES" (without quotes), if the robot can build a fence Emuskald wants, and "NO" (without quotes), if it is impossible.
3
30
60
90
NO
YES
YES
In the first test case, it is impossible to build the fence, since there is no regular polygon with angle .
In the second test case, the fence is a regular triangle, and in the last test case — a square.
算补角能不能整除360
代码:
1 #include<iostream> 2 using namespace std; 3 int main( void) 4 { 5 int t, ang, i; 6 7 cin>>t; 8 for( i=0; i<t; i++) 9 { 10 cin>>ang; 11 double ano; 12 double ans; 13 ano=180-ang; 14 ans=360/ano; 15 if( ans==(int)ans) 16 cout<<"YES"<<endl; 17 else 18 cout<<"NO"<<endl; 19 } 20 return 0; 21 }