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public class Shortest_Path {

public static double pathLength(String str) {

int x = 0, y = 0;

for (int i = 0; i < str.length(); i++) {

if (str.charAt(i) == 'E') {

x++;

} else if (str.charAt(i) == 'W') {

x--;

} else if (str.charAt(i) == 'N') {

y++;

} else {

y--;

}

}

return Math.sqrt((x * x) + (y * y));

}

// T.C=O(n)

// S.C=O(1)

public static void main(String[] args) {

System.out.println(pathLength("WNEENESENNN"));

}

}