#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
 

signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout << fixed << setprecision(20);
    
    
    ll n;
    cin>>n;
    double x[n],y[n];
    char d[n];
    for(int i=0;i<n;i++){
        cin>>x[i]>>y[i]>>d[i];
    }
    double dx[4] = {1,0,-1,0};
    double dy[4] = {0,1,0,-1};
    string s="RULD";    
    double INF = 1e18;
    double low = 0.0, up = 1e12;
    for(int c=0;c<1000;c++){
        double m[2] = {(low*2+up)/3,(low+up*2)/3};
        double x1[2]={INF,INF},x2[2]={-INF,-INF},y1[2]={INF,INF},y2[2]={-INF,-INF};
        for(int i=0;i<n;i++){
            for(int j=0;j<4;j++){
                if(d[i]==s[j]){
                    for(int k=0;k<2;k++){
                        x1[k] = min(x1[k], x[i]+dx[j]*m[k]);
                        x2[k] = max(x2[k], x[i]+dx[j]*m[k]);
                        y1[k] = min(y1[k], y[i]+dy[j]*m[k]);
                        y2[k] = max(y2[k], y[i]+dy[j]*m[k]);
                    }
                }
            }
        }
        double t1 = (x2[0] - x1[0]) * (y2[0] - y1[0]);
        double t2 = (x2[1] - x1[1]) * (y2[1] - y1[1]);
        if(t1 < t2){
            up = m[1];
        }
        else low = m[0];
    }
    double x1=INF, x2=-INF, y1=INF, y2=-INF;
    for(int i=0;i<n;i++){
        for(int j=0;j<4;j++){
            if(d[i]==s[j]){
                x1 = min(x1, x[i]+dx[j]*low);
                x2 = max(x2, x[i]+dx[j]*low);
                y1 = min(y1, y[i]+dy[j]*low);
                y2 = max(y2, y[i]+dy[j]*low);
            }
        }
    }
    double ans = (x2 - x1) * (y2 - y1);
    cout << ans << endl;
}