#include <bits/stdc++.h>
using namespace std;
int main(){
    int t;
    cin>>t;
    while (t--){
        int n,num,x=0,y=0;
        cin>>n;
        char c;
        while (n--){
            cin>>c>>num;
            if (c=='N')
                y+=num;
            if (c=='S')
                y-=num;
            if (c=='W')
                x-=num;
            if (c=='E')
                x+=num;
        }
        cout<<abs(x)+abs(y)<<endl;
    }
    return 0;
}

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MQo0Ck4gMgpFIDMKUyA1ClcgMTA=

1
4
N 2
E 3
S 5
W 10