QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #583621 | #9356. LRU Algorithm | shift# | WA | 506ms | 3848kb | C++20 | 2.2kb | 2024-09-22 20:52:45 | 2024-09-22 20:52:46 |
Judging History
answer
#include <bits/stdc++.h>
using i64 = long long;
#define int i64
bool isprime(int n) {
if (n <= 1) {
return false;
}
for (int i = 2; i * i <= n; i++) {
if (n % i == 0) {
return false;
}
}
return true;
}
int findPrime(int n) {
while (!isprime(n)) {
n++;
}
return n;
}
std::mt19937 rng(std::chrono::steady_clock::now().time_since_epoch().count());
const int P = findPrime(rng() % 900000000 + 100000000);
const int Base = findPrime(rng() % 8000000 + 10000000);
void solve() {
int n, q;
std::cin >> n >> q;
std::vector<i64> h(n + 1), a(n);
for(int i = 0; i < n; i ++ ) {
std::cin >> a[i];
}
std::vector<bool> ans(q);
std::unordered_map<int, std::vector<int>> q1, q2;
for(int i = 0; i < q; i ++ ) {
int t;
std::cin >> t;
i64 h = 0, f = true, cnt = 0;
while(t -- ){
int x;
std::cin >> x;
if(x) h = (h * Base + x) % P, cnt ++;
else f = false;
}
// assert(cnt > 0);
if(not cnt) {
ans[i] = true;
} else if(f) {
q1[h].push_back(i);
} else {
q2[h].push_back(i);
}
}
for(int i = 0; i < n; i ++ ) {
std::vector<bool> vis(n + 1);
i64 h = 0;
for(int j = i; j >= 0; j -- ) {
if(not vis[a[j]]) {
vis[a[j]] = true;
h = (h * Base + a[j]) % P;
if(q1.count(h)) {
for(auto x : q1[h]) {
ans[x] = true;
}
q1.erase(h);
}
}
}
if(q2.count(h)) {
for(auto x : q2[h]) {
ans[x] = true;
}
q2.erase(h);
}
}
for(int i = 0; i < q; i ++ ) {
std::cout << (ans[i] ? "Yes" : "No") << '\n';
}
}
signed main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
int T = 1;
std::cin >> T;
while(T -- ) {
solve();
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3568kb
input:
1 7 5 4 3 4 2 3 1 4 1 4 2 2 3 3 3 2 1 4 4 1 3 2 4 3 4 0 0
output:
Yes No No Yes Yes
result:
ok 5 lines
Test #2:
score: -100
Wrong Answer
time: 506ms
memory: 3848kb
input:
105 50 10 23 30 34 20 27 11 21 29 12 7 21 42 45 48 8 15 6 16 19 35 16 14 29 11 31 18 22 4 45 22 14 4 13 40 43 48 27 15 15 15 15 10 15 11 31 37 34 34 50 14 1 25 2 23 6 3 29 21 11 4 12 29 18 39 5 29 21 11 27 20 6 21 10 9 3 34 14 7 49 36 36 43 50 50 35 8 12 29 21 11 27 20 34 30 9 11 27 20 34 30 23 0 0 ...
output:
No No Yes No Yes No No Yes Yes No Yes Yes Yes Yes No Yes No No No Yes Yes Yes No No No No Yes Yes Yes No No No No Yes Yes Yes No No No No No No No Yes Yes No No No Yes Yes Yes Yes No No Yes No No No Yes Yes Yes Yes No No Yes No No No Yes No Yes No Yes No Yes No Yes No Yes Yes Yes No No No No No No Y...
result:
wrong answer 1090th lines differ - expected: 'No', found: 'Yes'