#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
const int MX=200010, inf=2e9;
ll n;
int m;
void NOPE(){
cout<<-1;
exit(0);
}
int main(){
ios::sync_with_stdio(0); cin.tie(0);
cin>>n>>m;
ll mn=0, sum=0;
char S[MX]; int k;
for(int i=1; i<=m; i++){
cin>>(S+1)>>k;
ll now=0, low=0;
for(int i=1; S[i]!=0; i++){
if(S[i]=='M'){
now++;
}
else{
now--;
}
if(low>=now) low=now;
}
mn=min({mn, sum+low, sum+low+now*(k-1)});
sum+=now*k;
// cout<<now<<' '<<low<<' '<<cnt<<' '<<tmp<<'\n';
}
if(sum>0) NOPE();
ll need=max(0LL, sum-1-mn);
cout<<need;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
248 KB |
Output is correct |
2 |
Correct |
2 ms |
356 KB |
Output is correct |
3 |
Correct |
2 ms |
432 KB |
Output is correct |
4 |
Correct |
2 ms |
452 KB |
Output is correct |
5 |
Correct |
2 ms |
636 KB |
Output is correct |
6 |
Correct |
3 ms |
648 KB |
Output is correct |
7 |
Correct |
2 ms |
648 KB |
Output is correct |
8 |
Correct |
2 ms |
648 KB |
Output is correct |
9 |
Correct |
2 ms |
648 KB |
Output is correct |
10 |
Correct |
3 ms |
648 KB |
Output is correct |
11 |
Correct |
2 ms |
648 KB |
Output is correct |
12 |
Correct |
2 ms |
648 KB |
Output is correct |
13 |
Correct |
2 ms |
648 KB |
Output is correct |
14 |
Correct |
3 ms |
748 KB |
Output is correct |
15 |
Correct |
2 ms |
748 KB |
Output is correct |
16 |
Correct |
2 ms |
748 KB |
Output is correct |
17 |
Correct |
3 ms |
748 KB |
Output is correct |
18 |
Correct |
2 ms |
748 KB |
Output is correct |
19 |
Correct |
3 ms |
748 KB |
Output is correct |
20 |
Correct |
2 ms |
748 KB |
Output is correct |
21 |
Correct |
3 ms |
748 KB |
Output is correct |
22 |
Correct |
3 ms |
748 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
248 KB |
Output is correct |
2 |
Correct |
2 ms |
356 KB |
Output is correct |
3 |
Correct |
2 ms |
432 KB |
Output is correct |
4 |
Correct |
2 ms |
452 KB |
Output is correct |
5 |
Correct |
2 ms |
636 KB |
Output is correct |
6 |
Correct |
3 ms |
648 KB |
Output is correct |
7 |
Correct |
2 ms |
648 KB |
Output is correct |
8 |
Correct |
2 ms |
648 KB |
Output is correct |
9 |
Correct |
2 ms |
648 KB |
Output is correct |
10 |
Correct |
3 ms |
648 KB |
Output is correct |
11 |
Correct |
2 ms |
648 KB |
Output is correct |
12 |
Correct |
2 ms |
648 KB |
Output is correct |
13 |
Correct |
2 ms |
648 KB |
Output is correct |
14 |
Correct |
3 ms |
748 KB |
Output is correct |
15 |
Correct |
2 ms |
748 KB |
Output is correct |
16 |
Correct |
2 ms |
748 KB |
Output is correct |
17 |
Correct |
3 ms |
748 KB |
Output is correct |
18 |
Correct |
2 ms |
748 KB |
Output is correct |
19 |
Correct |
3 ms |
748 KB |
Output is correct |
20 |
Correct |
2 ms |
748 KB |
Output is correct |
21 |
Correct |
3 ms |
748 KB |
Output is correct |
22 |
Correct |
3 ms |
748 KB |
Output is correct |
23 |
Correct |
4 ms |
764 KB |
Output is correct |
24 |
Correct |
3 ms |
764 KB |
Output is correct |
25 |
Correct |
3 ms |
764 KB |
Output is correct |
26 |
Correct |
4 ms |
764 KB |
Output is correct |
27 |
Correct |
3 ms |
764 KB |
Output is correct |
28 |
Correct |
3 ms |
764 KB |
Output is correct |
29 |
Correct |
3 ms |
764 KB |
Output is correct |
30 |
Correct |
4 ms |
764 KB |
Output is correct |
31 |
Correct |
3 ms |
764 KB |
Output is correct |
32 |
Correct |
3 ms |
764 KB |
Output is correct |
33 |
Correct |
3 ms |
764 KB |
Output is correct |
34 |
Correct |
3 ms |
764 KB |
Output is correct |
35 |
Correct |
3 ms |
764 KB |
Output is correct |
36 |
Correct |
4 ms |
764 KB |
Output is correct |
37 |
Correct |
3 ms |
764 KB |
Output is correct |
38 |
Correct |
3 ms |
764 KB |
Output is correct |
39 |
Correct |
4 ms |
812 KB |
Output is correct |
40 |
Correct |
3 ms |
812 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
248 KB |
Output is correct |
2 |
Correct |
2 ms |
356 KB |
Output is correct |
3 |
Correct |
2 ms |
432 KB |
Output is correct |
4 |
Correct |
2 ms |
452 KB |
Output is correct |
5 |
Correct |
2 ms |
636 KB |
Output is correct |
6 |
Correct |
3 ms |
648 KB |
Output is correct |
7 |
Correct |
2 ms |
648 KB |
Output is correct |
8 |
Correct |
2 ms |
648 KB |
Output is correct |
9 |
Correct |
2 ms |
648 KB |
Output is correct |
10 |
Correct |
3 ms |
648 KB |
Output is correct |
11 |
Correct |
2 ms |
648 KB |
Output is correct |
12 |
Correct |
2 ms |
648 KB |
Output is correct |
13 |
Correct |
2 ms |
648 KB |
Output is correct |
14 |
Correct |
3 ms |
748 KB |
Output is correct |
15 |
Correct |
2 ms |
748 KB |
Output is correct |
16 |
Correct |
2 ms |
748 KB |
Output is correct |
17 |
Correct |
3 ms |
748 KB |
Output is correct |
18 |
Correct |
2 ms |
748 KB |
Output is correct |
19 |
Correct |
3 ms |
748 KB |
Output is correct |
20 |
Correct |
2 ms |
748 KB |
Output is correct |
21 |
Correct |
3 ms |
748 KB |
Output is correct |
22 |
Correct |
3 ms |
748 KB |
Output is correct |
23 |
Correct |
4 ms |
764 KB |
Output is correct |
24 |
Correct |
3 ms |
764 KB |
Output is correct |
25 |
Correct |
3 ms |
764 KB |
Output is correct |
26 |
Correct |
4 ms |
764 KB |
Output is correct |
27 |
Correct |
3 ms |
764 KB |
Output is correct |
28 |
Correct |
3 ms |
764 KB |
Output is correct |
29 |
Correct |
3 ms |
764 KB |
Output is correct |
30 |
Correct |
4 ms |
764 KB |
Output is correct |
31 |
Correct |
3 ms |
764 KB |
Output is correct |
32 |
Correct |
3 ms |
764 KB |
Output is correct |
33 |
Correct |
3 ms |
764 KB |
Output is correct |
34 |
Correct |
3 ms |
764 KB |
Output is correct |
35 |
Correct |
3 ms |
764 KB |
Output is correct |
36 |
Correct |
4 ms |
764 KB |
Output is correct |
37 |
Correct |
3 ms |
764 KB |
Output is correct |
38 |
Correct |
3 ms |
764 KB |
Output is correct |
39 |
Correct |
4 ms |
812 KB |
Output is correct |
40 |
Correct |
3 ms |
812 KB |
Output is correct |
41 |
Correct |
5 ms |
812 KB |
Output is correct |
42 |
Incorrect |
4 ms |
812 KB |
Output isn't correct |
43 |
Halted |
0 ms |
0 KB |
- |