834A - The Useless Toy.cpp

//https://codeforces.com/problemset/problem/834/A
#include <bits/stdc++.h>
using namespace std;

//Macros
#define PI 3.14159265359
#define all(v) v.begin(),v.end()
#define sortva(v) sort(all(v))
#define sortvd(v) sort(v.rbegin(),v.rend())
#define sortaa(a,n) sort(a,a+n)
#define sortad(a,n) sort(a,a+n),reverse(a,a+n)
#define sfi1(v) scanf("%d",&v)
#define sfi2(v1,v2) scanf("%d %d",&v1,&v2)
#define sfi3(v1,v2,v3) scanf("%d %d %d",&v1,&v2,&v3)
#define sfll1(v) scanf("%I64d",&v);
#define sfll2(v1,v2) scanf("%I64d %I64d",&v1,&v2)
#define sfll3(v1,v2,v3) scanf("%I64d %I64d %I64d",&v1,&v2,&v3)
#define sfstr(v) scanf("%s", v);
#define sz(v) (int)v.size()
#define ndl puts("")
#define SS stringstream
#define F first
#define S second
#define pb push_back
#define mp make_pair
#define loop(i,a,b) for (int i = a; i < (b); i++)
#define prec setprecision(n)
#define endl '\n'

//Short code
typedef long long ll;
typedef vector<int> vi;
typedef vector<long long> vll;
typedef pair<int,int> pi;
typedef unsigned long long ull;
typedef long double ld;


int solve(){
	char spinner[] = {'v', '<', '^', '>'};
	map<char, int> pos;
	pos['v'] = 0;
	pos['<'] = 1;
	pos['^'] = 2;
	pos['>'] = 3;
	
	char st, end;
	int sec;
	cin>>st >>end >>sec;
	
	//cw
	int ans1 = (pos[st]+sec)%4, ans2 = ((pos[st]-sec)%4+4)%4;
	
	if(ans2 == ans1) cout<<"undefined";
	else if(spinner[ans1]==end) cout<<"cw";
	else if(spinner[ans2]==end) cout<<"ccw";
	
}

int main ()
{
  #ifndef ONLINE_JUDGE
  	freopen ("input.txt","r",stdin);
  	//freopen ("output.txt","w",stdout);
  #endif
  
   solve();
  return 0;
}