QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #354955 | #6516. New but Nostalgic Problem | Survivor_winner | WA | 11ms | 34820kb | C++14 | 847b | 2024-03-16 09:54:15 | 2024-03-16 09:54:15 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
using namespace std;
string s[1000010];
signed main()
{
ios::sync_with_stdio(0);
cin.tie(0), cout.tie(0);
int t;
cin >> t;
while (t--)
{
int n, k;
cin >> n >> k;
for (int i = 1; i <= n; i++) cin >> s[i];
sort(s + 1, s + n + 1);
string ans = s[n];
deque<pair<string, int>> q;
for (int i = 2; i <= n; i++)
{
string t = "";
for (int j = 0; j < s[i].size() && j < s[i - 1].size(); j++)
{
if (s[i][j] == s[i - 1][j]) t += s[i][j];
else break;
}
while (!q.empty() && q.front().second < i - k + 1) q.pop_front();
while (!q.empty() && q.back().first < t) q.pop_back();
q.push_back(make_pair(t, i - 1));
if (q.front().first < ans) ans = q.front().first;
}
cout << (ans != "" ? ans : "EMPTY") << '\n';
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 34808kb
input:
2 5 3 gdcpc gdcpcpcp suasua suas sususua 3 3 a b c
output:
gdcpc EMPTY
result:
ok 2 lines
Test #2:
score: -100
Wrong Answer
time: 11ms
memory: 34820kb
input:
20000 5 3 apveofpr irdbqk rnionnjjrk wrpihlsw ofylfsriof 5 4 iiltghqg kybhogptqf jfnmqxzrdq rpztcluq tzmnrcjae 5 5 ysp vujmkkcutl ksawqeiiaf waukilaq wmlsutlued 5 3 pikybt yiqmqvtjeq tyrsoihf vnvjrxpus cuubpacubb 5 2 rihuvikhg twrsuoervz ukiekoohw eysqgndpf sxswpeqtaf 5 5 vxzhicbp nvtdbgqal jilppvpt...
output:
EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY EMPTY ...
result:
wrong answer 3rd lines differ - expected: 'w', found: 'EMPTY'