Language: C++

#pragma GCC optimize("Ofast")
#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define rep(i,n) for(int i=0;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
#define rep2(i,n) for(int i=0;i<=n;i++)
#define repr(i,a,n) for(int i=a;i<n;i++)
#define all(a) a.begin(),a.end()
#define P pair<long long,long long>
#define uni(e) e.erase(unique(e.begin(),e.end()),e.end())
#define double long double
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
int INF=1e10;
int MOD=1e9+7;
template<class T> void out(T a){cout<<a<<'\n';}
template<class T> void yesno(T b){if(b)out("yes");else out("no");}
template<class T> void YesNo(T b){if(b)out("Yes");else out("No");}
template<class T> void YESNO(T b){if(b)out("YES");else out("NO");}
template<class T> void noyes(T b){if(b)out("no");else out("yes");}
template<class T> void NoYes(T b){if(b)out("No");else out("Yes");}
template<class T> void NOYES(T b){if(b)out("NO");else out("YES");}
int keta(int a){
  double b=a;
  b=log10(b);
  int c=b;
  return c+1;
}
int kurai(int a,int b){
  int m=pow(10,b),n=pow(10,b-1);
  return (a%m)/n;
}
int ketawa(int a){
  int k=0;
  rep(i,keta(a)){
  k+=kurai(a,i+1);
  }
  return k;
}
int gcd(int a,int b){
  if(a%b==0)
    return b;
  return gcd(b,a%b);
}
int lcm(int a,int b){
    return a/gcd(a,b)*b;
}
int mid(int a,int b,int c){
  vector<int> k(3);
  k[0]=a;k[1]=b;k[2]=c;
  sort(all(k));
  return k[1];
}
bool sosuu(int a){
  bool b=1;
  if(a<=1)
    return 0;
  else{
  rep1(i,sqrt(a)-1){
  if(a%(i+1)==0)
  b=0;
  }
  return b;
  }
}
int modpow(int a,int b,int m=MOD){
 if(!b)return 1; if(b&1)return modpow(a,b-1,m)*a%m;
 int memo = modpow(a,b>>1,m);
 return memo*memo%m;
}
int fact_mod(int n) {
    int f=1; 
for(int i=2;i<n+1;i++) f=f*(i%MOD)% MOD;
    return f;
}
int mod_pow(int x,int n) {
    int res=1;
    while(n>0){
        if(n&1) res=(res*x)%MOD; 
        x=(x*x)%MOD;        
n>>=1; 
    }
    return res;
}
int c_mod(int n, int r) {
    if(r>n-r) r=n-r;
    if(r==0) return 1;
    int a=1;
    rep(i,r) 
a=a*((n-i)%MOD)%MOD;
    int b=mod_pow(fact_mod(r), MOD-2);
    return (a%MOD)*(b%MOD)%MOD;
}
signed main(){
  double a;
  cin>>a;
  if(a<120)
  out(lcm(a,360)/a);
  else if(a==120)
    out(3);
  else
    out(360/(a/2));
}


Compiler output:
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:58,
                 from a.cc:3:
/usr/include/c++/14/numeric: In instantiation of 'constexpr std::common_type_t<_Mn, _Nn> std::lcm(_Mn, _Nn) [with _Mn = long double; _Nn = int; common_type_t<_Mn, _Nn> = long double]':
a.cc:100:10:   required from here
  100 |   out(lcm(a,360)/a);
      |       ~~~^~~~~~~
/usr/include/c++/14/numeric:190:21: error: static assertion failed: std::lcm arguments must be integers
  190 |       static_assert(is_integral_v<_Mn> && is_integral_v<_Nn>,
      |                     ^~~~~~~~~~~~~~~~~~
/usr/include/c++/14/numeric:190:21: note: 'std::is_integral_v<long double>' evaluates to false
In file included from /usr/include/c++/14/bits/stl_pair.h:60,
                 from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51:
/usr/include/c++/14/type_traits: In instantiation of 'struct std::make_unsigned<long double>':
/usr/include/c++/14/type_traits:2076:11:   required by substitution of 'template<class _Tp> using std::make_unsigned_t = typename std::make_unsigned::type [with _Tp = long double]'
 2076 |     using make_unsigned_t = typename make_unsigned<_Tp>::type;
      |           ^~~~~~~~~~~~~~~
/usr/include/c++/14/numeric:199:34:   required from 'constexpr std::common_type_t<_Mn, _Nn> std::lcm(_Mn, _Nn) [with _Mn = long double; _Nn = int; common_type_t<_Mn, _Nn> = long double]'
  199 |       _Ct __r = __m2 / __detail::__gcd<make_unsigned_t<_Ct>>(__m2, __n2);
      |                        ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc:100:10:   required from here
  100 |   out(lcm(a,360)/a);
      |       ~~~^~~~~~~
/usr/include/c++/14/type_traits:1929:13: error: invalid use of incomplete type 'class std::__make_unsigned_selector<long double, false, false>'
 1929 |     { using type = typename __make_unsigned_selector<_Tp>::__type; };
      |             ^~~~
/usr/include/c++/14/type_traits:1837:11: note: declaration of 'class std::__make_unsigned_selector<long double, false, false>'
 1837 |     class __make_unsigned_selector;
      |           ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/numeric: In instantiation of 'constexpr std::common_type_t<_Mn, _Nn> std::lcm(_Mn, _Nn) [with _Mn = long double; _Nn = int; common_type_t<_Mn, _Nn> = long double]':
a.cc:100:10:   required from here
  100 |   out(lcm(a,360)/a);
      |       ~~~^~~~~~~
/usr/include/c++/14/numeric:205:48: error: argument 1 in call to function '__builtin_mul_overflow' does not have integral type
  205 |       bool __overflow = __builtin_mul_overflow(__r, __n2, &__r);
      |                                                ^~~