| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 93960 |
2019-01-13T18:37:28 Z |
updown1 |
Rima (COCI17_rima) |
C++17 |
|
1000 ms |
64348 KB |
/*
The length decreases and then increases
for every node, count everything with the same suffix
dp[node] = (increasing sequence) max length sequence starting from this node ( but not counting count[node] or this node )
try every length as the smallest length
answer is max(big1[len]+big2[len]+count[word] where big1 an big2 have the same suffix,
1 + big1 + big2 + count[word])
*/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define For(i, a, b) for(int i=a; i<b; i++)
#define ffi For(i, 0, N)
#define ffj For(j, 0, M)
#define ffa ffi ffj
#define s <<" "<<
#define c <<" : "<<
#define w cout
#define e "\n"
#define pb push_back
#define mp make_pair
#define a first
#define b second
//#define int ll
const int MAXN=500000, INF=1000000000;
///500,000,000
int N, dp[MAXN], out;
string inp[MAXN];
bool vis[MAXN];
map<string, vector<int> > cnt; /// (suffix, vector<index> )
void go(int at) {
if (vis[at]) return;
vis[at] = true;
for (int i: cnt[inp[at]]) {
go(i);
dp[at] = max(dp[at], dp[i]+(int)cnt[inp[at]].size());
}
//w<< inp[at] s (int)(cnt[inp[at]].size())<<e;
}
main() {
//ifstream cin("test.in");
ios_base::sync_with_stdio(0); cin.tie(0);
cin >> N;
ffi {
cin >> inp[i];
cnt[inp[i].substr(1)].pb(i);
}
ffi go(i);
//ffi w<< inp[i] c dp[i]<<e;
ffi vis[i] = false;
ffi if (!vis[i]) {
string use = inp[i].substr(1);
int big1 = 0, big2 = 0;
for (int j: cnt[use]) {
big2 = max(big2, dp[j]);
if (big2 > big1) swap(big2, big1);
vis[j] = true;
}
out = max(out, big1+big2+(int)cnt[use].size());
if (cnt[use].size() == 1) {
big1 = big2 = 0;
for (int j: cnt[inp[i]]) {
big2 = max(big2, dp[j]);
if (big2 > big1) swap(big2, big1);
}
//if (i == 3) w<< big1 s big2 s (int)cnt[inp[i]].size()<<e;
out = max(out, 1+big1+big2+(int)cnt[inp[i]].size());
}
}
w<< out<<e;
}
Compilation message
rima.cpp:42:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
main() {
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
15 ms |
15992 KB |
Output is correct |
| 2 |
Correct |
15 ms |
15992 KB |
Output is correct |
| 3 |
Correct |
15 ms |
15992 KB |
Output is correct |
| 4 |
Execution timed out |
1087 ms |
64348 KB |
Time limit exceeded |
| 5 |
Correct |
42 ms |
22264 KB |
Output is correct |
| 6 |
Correct |
21 ms |
18188 KB |
Output is correct |
| 7 |
Incorrect |
20 ms |
17864 KB |
Output isn't correct |
| 8 |
Correct |
20 ms |
17624 KB |
Output is correct |
| 9 |
Correct |
61 ms |
24924 KB |
Output is correct |
| 10 |
Correct |
20 ms |
17660 KB |
Output is correct |
