#include <bits/stdc++.h>
#define FastIO ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
using namespace std;
typedef long long ll;
int main() {
FastIO;
ll i, j, cntr, ans, N;
string dns;
cin >> dns;
N = dns.size();
ans = 1;
for(i = 0; i < 4; i++) {
vector<ll> same(N * 2 + 1, -1);
cntr = N;
for(j = 0; j < N; j++) {
cntr += (dns[j] == "ACGT"[i]) * 2 - 1;
if(same[cntr] == -1)
same[cntr] = j;
else
ans = max(ans, j - same[cntr]);
}
while(cntr > N) {
cntr--;
if(same[cntr] != -1)
ans = max(ans, j - same[cntr]);
j++;
}
}
ans = min(ans, N);
cout << ans << '\n';
return 0;
}
Részfeladat | Összpont | Teszt | Verdikt | Idő | Memória | ||
---|---|---|---|---|---|---|---|
base | 40/40 | ||||||
1 | Elfogadva | 0/0 | 3ms | 1864 KiB | |||
2 | Elfogadva | 0/0 | 12ms | 8892 KiB | |||
3 | Elfogadva | 2/2 | 3ms | 2388 KiB | |||
4 | Elfogadva | 2/2 | 3ms | 2460 KiB | |||
5 | Elfogadva | 2/2 | 3ms | 2616 KiB | |||
6 | Elfogadva | 2/2 | 3ms | 2844 KiB | |||
7 | Elfogadva | 2/2 | 3ms | 2956 KiB | |||
8 | Elfogadva | 4/4 | 4ms | 5068 KiB | |||
9 | Elfogadva | 4/4 | 4ms | 6236 KiB | |||
10 | Elfogadva | 4/4 | 6ms | 6972 KiB | |||
11 | Elfogadva | 4/4 | 7ms | 7964 KiB | |||
12 | Elfogadva | 4/4 | 7ms | 8408 KiB | |||
13 | Elfogadva | 5/5 | 8ms | 9428 KiB | |||
14 | Elfogadva | 5/5 | 8ms | 10472 KiB |