#include <iostream> #include <string> #include <vector> #include <cmath> #include <algorithm> #include <cstdlib> #include <ctime> #include <cstdio> #include <functional> #include <set> #include <cstring> using namespace std; int main() { string s; cin>>s; int x=0,y=0; for(int i=0;i<s.size();i++){ if(s[i]=='N') y++; else if(s[i]=='S') y--; else if(s[i]=='E') x++; else if(s[i]=='W') x--; } cout<<sqrt(x*x+y*y)<<endl; return 0; }