#include <bits/stdc++.h>
using namespace std;
 
#define int long long
 
signed main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
 
    int n;
    cin >> n;
 
    int t = 0;      // vị trí kim
    int dem = 0;    // số lần chạm 0 (KHÔNG tính ban đầu)
 
    while(n--){
        char x;
        int y;
        cin >> x >> y;
 
        if(x == 'L'){
            if(y >= t)
                dem += (y - t) / 100 + 1;
            t = ((t - y) % 100 + 100) % 100;
        }
        else{ // 'R'
            int i0 = (100 - t) % 100;
            if(i0 == 0) i0 = 100;
            if(y >= i0)
                dem += (y - i0) / 100 + 1;
            t = (t + y) % 100;
        }
    }
 
    cout << dem;
    return 0;
}
 

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NQpMIDUKUiAxMApMIDUKUiAxMjAKTCA0MAo=

5
L 5
R 10
L 5
R 120
L 40