#include <bits/stdc++.h>
using namespace std;
#define ll long long
string s;
vector<ll> pos[2];
ll N,M;
int main(){
ios::sync_with_stdio(0);
cin.tie(0);cout.tie(0);
cin>>N>>M;
if(N>1e6)return 0;
for(int i = 0;i<M;i++){
string t;
int c;
cin>>t>>c;
while(c--)s += t;
}
reverse(s.begin(),s.end());
ll sum = 0,ans = 0;
for(auto &i:s){
if(i == 'F'){
sum--;
ans = max(ans,sum);
}
else sum++;
}
if(sum>0)cout<<"-1\n";
else cout<<ans<<'\n';
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
460 KB |
Output is correct |
5 |
Correct |
0 ms |
352 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
460 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
352 KB |
Output is correct |
15 |
Correct |
0 ms |
452 KB |
Output is correct |
16 |
Correct |
1 ms |
352 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
416 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
460 KB |
Output is correct |
5 |
Correct |
0 ms |
352 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
460 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
352 KB |
Output is correct |
15 |
Correct |
0 ms |
452 KB |
Output is correct |
16 |
Correct |
1 ms |
352 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
416 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
344 KB |
Output is correct |
23 |
Correct |
2 ms |
996 KB |
Output is correct |
24 |
Correct |
2 ms |
1000 KB |
Output is correct |
25 |
Correct |
1 ms |
1000 KB |
Output is correct |
26 |
Correct |
1 ms |
1004 KB |
Output is correct |
27 |
Correct |
1 ms |
1120 KB |
Output is correct |
28 |
Correct |
2 ms |
984 KB |
Output is correct |
29 |
Correct |
1 ms |
1000 KB |
Output is correct |
30 |
Correct |
2 ms |
996 KB |
Output is correct |
31 |
Correct |
2 ms |
1000 KB |
Output is correct |
32 |
Correct |
2 ms |
1004 KB |
Output is correct |
33 |
Correct |
1 ms |
1000 KB |
Output is correct |
34 |
Correct |
1 ms |
1000 KB |
Output is correct |
35 |
Correct |
2 ms |
1120 KB |
Output is correct |
36 |
Correct |
2 ms |
1000 KB |
Output is correct |
37 |
Correct |
1 ms |
1024 KB |
Output is correct |
38 |
Correct |
2 ms |
1000 KB |
Output is correct |
39 |
Correct |
1 ms |
1016 KB |
Output is correct |
40 |
Correct |
2 ms |
996 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
460 KB |
Output is correct |
5 |
Correct |
0 ms |
352 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
460 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
352 KB |
Output is correct |
15 |
Correct |
0 ms |
452 KB |
Output is correct |
16 |
Correct |
1 ms |
352 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
416 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
344 KB |
Output is correct |
23 |
Correct |
2 ms |
996 KB |
Output is correct |
24 |
Correct |
2 ms |
1000 KB |
Output is correct |
25 |
Correct |
1 ms |
1000 KB |
Output is correct |
26 |
Correct |
1 ms |
1004 KB |
Output is correct |
27 |
Correct |
1 ms |
1120 KB |
Output is correct |
28 |
Correct |
2 ms |
984 KB |
Output is correct |
29 |
Correct |
1 ms |
1000 KB |
Output is correct |
30 |
Correct |
2 ms |
996 KB |
Output is correct |
31 |
Correct |
2 ms |
1000 KB |
Output is correct |
32 |
Correct |
2 ms |
1004 KB |
Output is correct |
33 |
Correct |
1 ms |
1000 KB |
Output is correct |
34 |
Correct |
1 ms |
1000 KB |
Output is correct |
35 |
Correct |
2 ms |
1120 KB |
Output is correct |
36 |
Correct |
2 ms |
1000 KB |
Output is correct |
37 |
Correct |
1 ms |
1024 KB |
Output is correct |
38 |
Correct |
2 ms |
1000 KB |
Output is correct |
39 |
Correct |
1 ms |
1016 KB |
Output is correct |
40 |
Correct |
2 ms |
996 KB |
Output is correct |
41 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
42 |
Halted |
0 ms |
0 KB |
- |