Submission #83288

# Submission time Handle Problem Language Result Execution time Memory
83288 2018-11-06T17:26:18 Z farukkastamonuda Palindromes (APIO14_palindrome) C++14
100 / 100
62 ms 41312 KB
#include <bits/stdc++.h>
#define li 300005
#define inf 1000000009
#define md 1000000007
#define lo long long
#define fi first
#define se second
#define mp make_pair
#define pb push_back
using namespace std;
int n,link[li],len[li],now,lazy[li];
char s[li];
int tot=2,nxt[li][26];
stack<int> st;
lo int ans;
void add(int ind){
	while(s[ind-len[now]-1]!=s[ind]) now=link[now];
	if(nxt[now][s[ind]-'a']){
		now=nxt[now][s[ind]-'a'];
		lazy[now]++;
		return ;
	}
	int nw=++tot;
	nxt[now][s[ind]-'a']=nw;
	len[nw]=len[now]+2;
	st.push(nw);
	lazy[nw]++;
	if(len[nw]==1){
		link[nw]=2;
		now=nw;
		return ;
	}
	now=link[now];
	while(s[ind-len[now]-1]!=s[ind]) now=link[now];
	link[nw]=nxt[now][s[ind]-'a'];
	now=nw;
}
int main(){
	scanf("%s",s+1);
	n=strlen(s+1);
	link[1]=1;link[2]=1;
	len[1]=-1;len[2]=0;
	now=1;
	for(int i=1;i<=n;i++) add(i);
	while(!st.empty()){
		int x=st.top();
		st.pop();
		ans=max(ans,1ll*len[x]*lazy[x]);
		lazy[link[x]]+=lazy[x];
	}
	printf("%lld\n",ans);
	return 0;
}

Compilation message

palindrome.cpp: In function 'int main()':
palindrome.cpp:39:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",s+1);
  ~~~~~^~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 576 KB Output is correct
3 Correct 2 ms 576 KB Output is correct
4 Correct 2 ms 616 KB Output is correct
5 Correct 2 ms 728 KB Output is correct
6 Correct 2 ms 840 KB Output is correct
7 Correct 2 ms 840 KB Output is correct
8 Correct 2 ms 840 KB Output is correct
9 Correct 2 ms 840 KB Output is correct
10 Correct 2 ms 840 KB Output is correct
11 Correct 2 ms 860 KB Output is correct
12 Correct 2 ms 864 KB Output is correct
13 Correct 2 ms 868 KB Output is correct
14 Correct 2 ms 872 KB Output is correct
15 Correct 2 ms 876 KB Output is correct
16 Correct 2 ms 884 KB Output is correct
17 Correct 2 ms 884 KB Output is correct
18 Correct 2 ms 976 KB Output is correct
19 Correct 2 ms 976 KB Output is correct
20 Correct 2 ms 976 KB Output is correct
21 Correct 2 ms 1032 KB Output is correct
22 Correct 2 ms 1032 KB Output is correct
23 Correct 2 ms 1032 KB Output is correct
24 Correct 3 ms 1032 KB Output is correct
25 Correct 2 ms 1032 KB Output is correct
26 Correct 2 ms 1032 KB Output is correct
27 Correct 2 ms 1032 KB Output is correct
28 Correct 2 ms 1032 KB Output is correct
29 Correct 2 ms 1032 KB Output is correct
30 Correct 2 ms 1032 KB Output is correct
31 Correct 2 ms 1032 KB Output is correct
32 Correct 2 ms 1032 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 1248 KB Output is correct
2 Correct 2 ms 1248 KB Output is correct
3 Correct 2 ms 1252 KB Output is correct
4 Correct 2 ms 1252 KB Output is correct
5 Correct 2 ms 1260 KB Output is correct
6 Correct 2 ms 1260 KB Output is correct
7 Correct 2 ms 1260 KB Output is correct
8 Correct 2 ms 1276 KB Output is correct
9 Correct 2 ms 1276 KB Output is correct
10 Correct 2 ms 1276 KB Output is correct
11 Correct 2 ms 1276 KB Output is correct
12 Correct 2 ms 1276 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 3 ms 2444 KB Output is correct
2 Correct 3 ms 2452 KB Output is correct
3 Correct 3 ms 2480 KB Output is correct
4 Correct 3 ms 2492 KB Output is correct
5 Correct 3 ms 2564 KB Output is correct
6 Correct 4 ms 2564 KB Output is correct
7 Correct 4 ms 2564 KB Output is correct
8 Correct 2 ms 2564 KB Output is correct
9 Correct 2 ms 2564 KB Output is correct
10 Correct 3 ms 2564 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 16 ms 13364 KB Output is correct
2 Correct 17 ms 13592 KB Output is correct
3 Correct 17 ms 13592 KB Output is correct
4 Correct 17 ms 13712 KB Output is correct
5 Correct 22 ms 13812 KB Output is correct
6 Correct 15 ms 13812 KB Output is correct
7 Correct 15 ms 13812 KB Output is correct
8 Correct 4 ms 13812 KB Output is correct
9 Correct 6 ms 13812 KB Output is correct
10 Correct 15 ms 13812 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 46 ms 38348 KB Output is correct
2 Correct 46 ms 38644 KB Output is correct
3 Correct 46 ms 38940 KB Output is correct
4 Correct 48 ms 39236 KB Output is correct
5 Correct 62 ms 39476 KB Output is correct
6 Correct 44 ms 39476 KB Output is correct
7 Correct 43 ms 39476 KB Output is correct
8 Correct 8 ms 39476 KB Output is correct
9 Correct 7 ms 39476 KB Output is correct
10 Correct 42 ms 39476 KB Output is correct
11 Correct 45 ms 41312 KB Output is correct
12 Correct 11 ms 41312 KB Output is correct