volim

#include <bits/stdc++.h>

#define i64 long long
#define u64 unsigned long long
#define i32 int
#define u32 unsigned int

#define pii pair<int, int>
#define pll pair<long long, long long>

#define ld long double
#define defmod 1000000007

#define mati64(a,b) vector<vector<i64>>(a, vector<i64>(b, 0));
using namespace std;


int main(){
  cin.sync_with_stdio(0);
  cin.tie(0);
  
  int k; cin >> k;
  k--;
  int n; cin >> n;
  int lol = 0;
  int ans = -1;
  for(int i = 0; i < n; ++i){
    int ti; char c;
    cin >> ti >> c;
    lol+=ti;
    if(lol >= 210 && ans == -1){
      ans = k+1;
    }
      
    if(c == 'T')
      k = (k+1)%8;
    
  }
  cout << ans << endl;
  
  return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED