#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef pair<int,int> pii;
typedef vector<int> vii;
typedef vector<ll> vll;
typedef vector<pii> vpii;
typedef unordered_map<int,int> umap;
typedef long double ld;
#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define popcount __builtin_popcount
#define case cout<<"Case "<<__testcase-testcase<<":";
#define endl '\n'

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int testcase=1;
    //cin>>testcase;
    int __testcase=testcase;
    while(testcase--){
        int n,m,i,j,k;
        cin>>n;
        const int N=1000000;
        vii c(2*N+5, -1);
        int u,v;
        char x;
        for(i=0;i<n;i++){
            cin>>u>>x>>v;
            u+=N;
            if(x=='L') v=u-v;
            else v=u+v;
            c[u]=v;
        }
        cin>>k;
        k+=N;
        while(n--){
            k=c[k];
        }
        cout<<k-N<<endl;

    }
}