#include<stdio.h>
#include<map>
using namespace std;
map<long long,long long>m;
char s[200010];
long long int p,len,dap,a[200010],b[200010],c[200010];
long long int arr1[200010],arr2[200010];
int main()
{
int i;
scanf("%lld",&len);
scanf("%s",s);
for(i=0;i<len;i++)
{
a[i]=a[i-1]; b[i]=b[i-1]; c[i]=c[i-1];
if(s[i]=='J') a[i]=a[i-1]+1;
if(s[i]=='O') b[i]=b[i-1]+1;
if(s[i]=='I') c[i]=c[i-1]+1;
}
for(i=0;i<len;i++) arr1[i]=a[i]-b[i]+100000, arr2[i]=b[i]-c[i]+100000;
for(i=0;i<len;i++)
{
if(arr1[i]==100000 && arr2[i]==100000 && dap<i+1) dap=i+1;
}
for(i=0;i<len;i++)
{
if(m[arr1[i]*1000000+arr2[i]])
{
p=m[arr1[i]*1000000+arr2[i]]-1;
if(dap<i-p) dap=i-p;
}
else m[arr1[i]*1000000+arr2[i]]=i+1;
}
printf("%lld",dap);
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
9220 KB |
Output is correct |
2 |
Correct |
0 ms |
9220 KB |
Output is correct |
3 |
Correct |
0 ms |
9220 KB |
Output is correct |
4 |
Correct |
0 ms |
9220 KB |
Output is correct |
5 |
Correct |
0 ms |
9220 KB |
Output is correct |
6 |
Correct |
0 ms |
9220 KB |
Output is correct |
7 |
Correct |
0 ms |
9220 KB |
Output is correct |
8 |
Correct |
0 ms |
9220 KB |
Output is correct |
9 |
Correct |
0 ms |
9220 KB |
Output is correct |
10 |
Correct |
0 ms |
9220 KB |
Output is correct |
11 |
Correct |
0 ms |
9220 KB |
Output is correct |
12 |
Correct |
0 ms |
9220 KB |
Output is correct |
13 |
Correct |
0 ms |
9220 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
9220 KB |
Output is correct |
2 |
Correct |
0 ms |
9220 KB |
Output is correct |
3 |
Correct |
0 ms |
9220 KB |
Output is correct |
4 |
Correct |
0 ms |
9220 KB |
Output is correct |
5 |
Correct |
0 ms |
9220 KB |
Output is correct |
6 |
Correct |
0 ms |
9220 KB |
Output is correct |
7 |
Correct |
0 ms |
9220 KB |
Output is correct |
8 |
Correct |
0 ms |
9220 KB |
Output is correct |
9 |
Correct |
0 ms |
9220 KB |
Output is correct |
10 |
Correct |
0 ms |
9352 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
9352 KB |
Output is correct |
2 |
Correct |
8 ms |
9748 KB |
Output is correct |
3 |
Correct |
4 ms |
10144 KB |
Output is correct |
4 |
Correct |
12 ms |
10936 KB |
Output is correct |
5 |
Correct |
28 ms |
11992 KB |
Output is correct |
6 |
Correct |
44 ms |
12124 KB |
Output is correct |
7 |
Correct |
44 ms |
12520 KB |
Output is correct |
8 |
Correct |
40 ms |
11992 KB |
Output is correct |
9 |
Correct |
44 ms |
12256 KB |
Output is correct |
10 |
Correct |
48 ms |
11992 KB |
Output is correct |
11 |
Correct |
40 ms |
13708 KB |
Output is correct |
12 |
Correct |
20 ms |
10804 KB |
Output is correct |
13 |
Correct |
24 ms |
10144 KB |
Output is correct |
14 |
Correct |
24 ms |
14764 KB |
Output is correct |
15 |
Correct |
12 ms |
9748 KB |
Output is correct |