#include<bits/stdc++.h>
using namespace std ;
const int mx = 2e5 + 5 ;
int n , k , ind[3][mx] , pos[mx] , siz[3] ;
string s ;
int bs(int low , int high , int val , int a[])
{
while(low<high)
{
int mid = (low+high)>>1 ;
if(a[mid]<val) low = mid + 1 ;
else high = mid ;
}
return low ;
}
int check(int x)
{
for(int i = 0 ; i <= x ; ++i)
{
int l = i + 1 , r = n - x + i , cnt = 0 ;
for(int j = 0 ; j < 3 ; ++j)
{
if(l>ind[j][siz[j]]) break ;
int pos = bs(1,siz[j],l,ind[j]) ;
if(((pos+k-1)<=siz[j]) && (ind[j][pos+k-1]<=r))
{
++cnt , l = ind[j][pos+k-1] + 1 ;
}
}
if(cnt==3) return 1 ;
}
return 0 ;
}
int main()
{
scanf("%d%d",&n,&k) ;
cin>>s ;
for(int i = 0 ; i < n ; ++i)
{
if(s[i]=='J')
{
++siz[0] ;
ind[0][siz[0]] = i + 1 ;
}
else if(s[i]=='O')
{
++siz[1] ;
ind[1][siz[1]] = i + 1 ;
}
else
{
++siz[2] ;
ind[2][siz[2]] = i + 1 ;
}
}
int low = 0 , high = n ;
if(!check(0))
{
puts("-1") ;
return 0 ;
}
while(low<high)
{
int mid = (low+high+1)>>1 ;
if(check(mid)) low = mid ;
else high = mid - 1 ;
}
printf("%d\n",n-low-(3*k)) ;
return 0 ;
}
Compilation message
ho_t2.cpp: In function 'int main()':
ho_t2.cpp:42:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
42 | scanf("%d%d",&n,&k) ;
| ~~~~~^~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
0 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
0 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
3 ms |
364 KB |
Output is correct |
| 20 |
Correct |
3 ms |
364 KB |
Output is correct |
| 21 |
Correct |
3 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
492 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| 31 |
Correct |
1 ms |
384 KB |
Output is correct |
| 32 |
Correct |
1 ms |
512 KB |
Output is correct |
| 33 |
Correct |
2 ms |
364 KB |
Output is correct |
| 34 |
Correct |
2 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
384 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
0 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
0 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
1 ms |
364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
364 KB |
Output is correct |
| 14 |
Correct |
0 ms |
364 KB |
Output is correct |
| 15 |
Correct |
1 ms |
364 KB |
Output is correct |
| 16 |
Correct |
1 ms |
364 KB |
Output is correct |
| 17 |
Correct |
1 ms |
364 KB |
Output is correct |
| 18 |
Correct |
1 ms |
364 KB |
Output is correct |
| 19 |
Correct |
3 ms |
364 KB |
Output is correct |
| 20 |
Correct |
3 ms |
364 KB |
Output is correct |
| 21 |
Correct |
3 ms |
364 KB |
Output is correct |
| 22 |
Correct |
1 ms |
364 KB |
Output is correct |
| 23 |
Correct |
1 ms |
492 KB |
Output is correct |
| 24 |
Correct |
1 ms |
364 KB |
Output is correct |
| 25 |
Correct |
1 ms |
364 KB |
Output is correct |
| 26 |
Correct |
1 ms |
364 KB |
Output is correct |
| 27 |
Correct |
1 ms |
364 KB |
Output is correct |
| 28 |
Correct |
1 ms |
364 KB |
Output is correct |
| 29 |
Correct |
1 ms |
364 KB |
Output is correct |
| 30 |
Correct |
1 ms |
364 KB |
Output is correct |
| 31 |
Correct |
1 ms |
384 KB |
Output is correct |
| 32 |
Correct |
1 ms |
512 KB |
Output is correct |
| 33 |
Correct |
2 ms |
364 KB |
Output is correct |
| 34 |
Correct |
2 ms |
364 KB |
Output is correct |
| 35 |
Correct |
1 ms |
384 KB |
Output is correct |
| 36 |
Correct |
44 ms |
1404 KB |
Output is correct |
| 37 |
Correct |
92 ms |
1660 KB |
Output is correct |
| 38 |
Correct |
90 ms |
1404 KB |
Output is correct |
| 39 |
Correct |
339 ms |
1404 KB |
Output is correct |
| 40 |
Correct |
106 ms |
1648 KB |
Output is correct |
| 41 |
Correct |
258 ms |
1692 KB |
Output is correct |
| 42 |
Correct |
301 ms |
1532 KB |
Output is correct |
| 43 |
Correct |
25 ms |
1148 KB |
Output is correct |
| 44 |
Correct |
31 ms |
1276 KB |
Output is correct |
| 45 |
Correct |
52 ms |
1412 KB |
Output is correct |
| 46 |
Correct |
40 ms |
1532 KB |
Output is correct |
| 47 |
Correct |
43 ms |
1404 KB |
Output is correct |
| 48 |
Correct |
40 ms |
1472 KB |
Output is correct |
| 49 |
Correct |
5 ms |
1148 KB |
Output is correct |
| 50 |
Correct |
7 ms |
1404 KB |
Output is correct |
| 51 |
Correct |
7 ms |
1680 KB |
Output is correct |
| 52 |
Correct |
8 ms |
1552 KB |
Output is correct |
| 53 |
Correct |
8 ms |
1404 KB |
Output is correct |
| 54 |
Correct |
146 ms |
1660 KB |
Output is correct |
| 55 |
Correct |
74 ms |
1660 KB |
Output is correct |
| 56 |
Correct |
25 ms |
1660 KB |
Output is correct |
