/// I'm only brave when I have to be
#include <bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define ppb pop_back
#define fast_io ios::sync_with_stdio(false);cin.tie(NULL);
#define file_io freopen("input.txt","r",stdin);freopen("output.txt","w",stdout);
#define FOR(i,k,n) for(int i = k; i < n; ++ i)
#define debf cout<<"(0-0)\n";
#define all(x) x.begin(), x.end()
#define dec(x) cout << fixed << setprecision(x);
#define pf push_front
#define ppf pop_front
#define dash " ------- "
#define what(x) cerr << #x << " is " << x << endl;
#define eb emplace_back
//#define int short int
//#define int long long
#define sz(s) (int) (s.size())
#define fl cout.flush()
#pragma GCC optimize ("O3")
using namespace std;
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <int, pii> pip;
typedef pair <pii, int> ppi;
typedef pair <ll, ll> pll;
typedef unsigned long long ull;
typedef long double ld;
template <class T> using max_heap = priority_queue <T, vector <T>, less <T> >;
template <class T> using min_heap = priority_queue <T, vector <T>, greater <T> >;
constexpr int MOD = 1e9 + 7, N = 2e5 + 8, M = 1e9, SQ = 300, INF = 1e9 + 8, LGN = 22, mod = 998244353, P = 131113;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int n, k, r, a[N], val[N], mx, ans = INF;
int32_t main(){
fast_io;
cin >> n >> k >> r;
FOR (i, 0, n){
cin >> a[i];
}
int need = r;
FOR (i, 0, r){
int aa, bb;
cin >> aa >> bb;
val[aa] = bb;
}
-- val[a[0]];
if (!val[a[0]]){
-- need;
}
int l = 0, r = 1;
while (r < n){
while (need && r < n){
-- val[a[r]];
if (val[a[r]] == 0){
-- need;
}
++ r;
}
while (val[a[l]] < 0){
++ val[a[l]];
++ l;
}
if (need == 0){
ans = min (ans, r - l);
}
++ val[a[l]];
++ l;
++ need;
}
if (ans <= n){
cout << ans << '\n';
}
else {
cout << "impossible\n";
}
return 0;
}
// Yesterday is history
// Tomorrow is a mystery
// but today is a gift
// That is why it is called the present
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
504 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
432 KB |
Output is correct |
6 |
Correct |
0 ms |
500 KB |
Output is correct |
7 |
Correct |
0 ms |
468 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
512 KB |
Output is correct |
4 |
Correct |
1 ms |
344 KB |
Output is correct |
5 |
Correct |
1 ms |
476 KB |
Output is correct |
6 |
Correct |
1 ms |
344 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
468 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
600 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
8 ms |
1624 KB |
Output is correct |
2 |
Correct |
9 ms |
1624 KB |
Output is correct |
3 |
Correct |
10 ms |
1628 KB |
Output is correct |
4 |
Correct |
9 ms |
1624 KB |
Output is correct |
5 |
Correct |
13 ms |
2652 KB |
Output is correct |
6 |
Correct |
8 ms |
1624 KB |
Output is correct |
7 |
Correct |
9 ms |
1628 KB |
Output is correct |
8 |
Correct |
14 ms |
3068 KB |
Output is correct |
9 |
Correct |
11 ms |
2140 KB |
Output is correct |
10 |
Correct |
8 ms |
1628 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
756 KB |
Output is correct |
14 |
Correct |
1 ms |
344 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
20 ms |
3164 KB |
Output is correct |
2 |
Correct |
18 ms |
2912 KB |
Output is correct |
3 |
Correct |
15 ms |
2652 KB |
Output is correct |
4 |
Correct |
10 ms |
1628 KB |
Output is correct |
5 |
Correct |
25 ms |
3540 KB |
Output is correct |
6 |
Correct |
24 ms |
3932 KB |
Output is correct |
7 |
Correct |
12 ms |
2140 KB |
Output is correct |
8 |
Correct |
14 ms |
2400 KB |
Output is correct |
9 |
Correct |
8 ms |
1624 KB |
Output is correct |
10 |
Correct |
9 ms |
1632 KB |
Output is correct |
11 |
Correct |
10 ms |
1636 KB |
Output is correct |
12 |
Correct |
9 ms |
1636 KB |
Output is correct |
13 |
Correct |
13 ms |
2900 KB |
Output is correct |
14 |
Correct |
8 ms |
1632 KB |
Output is correct |
15 |
Correct |
9 ms |
1636 KB |
Output is correct |
16 |
Correct |
14 ms |
3248 KB |
Output is correct |
17 |
Correct |
11 ms |
2136 KB |
Output is correct |
18 |
Correct |
9 ms |
1644 KB |
Output is correct |
19 |
Correct |
1 ms |
352 KB |
Output is correct |
20 |
Correct |
0 ms |
352 KB |
Output is correct |
21 |
Correct |
1 ms |
352 KB |
Output is correct |
22 |
Correct |
1 ms |
344 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
0 ms |
348 KB |
Output is correct |
26 |
Correct |
1 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
1 ms |
348 KB |
Output is correct |
33 |
Correct |
0 ms |
468 KB |
Output is correct |