#include #include #include #include #include #include #include #include #include #include #include #define repd(i,a,b) for (int i=(a);i<(b);i++) #define rep(i,n) repd(i,0,n) #define var auto #define mod 1000000007 typedef long long ll; using namespace std; int inputValue(){ int a; cin >> a; return a; } template void output(T a, int precision) { if(precision > 0){ cout << fixed << setprecision(precision) << a << "\n"; } else{ cout << a << "\n"; } } // end of template int main() { // source code double n; cin >> n; output(n * 108 / 100, 15); return 0; }