QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #583598 | #9356. LRU Algorithm | shift# | WA | 533ms | 3764kb | C++20 | 2.1kb | 2024-09-22 20:45:35 | 2024-09-22 20:45:35 |
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;
while(t -- ){
int x;
std::cin >> x;
if(x) h = (h * Base + x) % P;
else f = false;
}
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 -- ) {
assert(a[j] <= n);
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: 1ms
memory: 3596kb
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: 533ms
memory: 3764kb
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 No 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 No No Yes Yes Yes No No No No No No Yes...
result:
wrong answer 44th lines differ - expected: 'Yes', found: 'No'