oj.uz

Submission #927128

# Submission time Handle Problem Language Result Execution time Memory
927128 2024-02-14T09:55:13 Z vjudge1 Martian DNA (BOI18_dna) C++17
0 / 100
 59 ms 15184 KB 
#pragma GCC optimize("O3", "unroll-loops") // "Ofast" 	
#pragma GCC target("avx2", "bmi", "bmi2", "lzcnt", "popcnt") 

#include <bits/stdc++.h>

#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define f first
#define s second
#define dbg(x) cerr << #x << " = " << x << '\n'
#define bit(x, i) ((x) >> (i) & 1)

using namespace std;
using ll = long long;
using ld = long double;
using pii = pair<int, int>;

const int N = 1e6 + 5, mod = 1e9 + 7;
const ll inf = 1e18 + 7;
const ld eps = 1e-6;

ll add (ll a, ll b) {
	a += b;
	if (a < 0) a += mod;
	if (a >= mod) a -= mod;
	return a;
}

ll mul (ll a, ll b) {
	a *= b;
	if (a >= mod) a %= mod;
	return a;
}   

int n, k, R, a[N], b[N], cnt[N], t[4 * N];

void build (int v = 1, int tl = 0, int tr = k - 1) {
	if (tl == tr) {
		t[v] = b[tl];
		return;
	}
	int tm = tl + tr >> 1;
	build(v << 1, tl, tm); build(v << 1 | 1, tm + 1, tr);
	t[v] = max(t[v << 1], t[v << 1 | 1]);
}

void upd (int pos, int x, int v = 1, int tl = 0, int tr = k - 1) {
	if (tl == tr) {
		t[v] += x;
		return;
	}
	int tm = tl + tr >> 1;
	if (pos <= tm) upd(pos, x, v << 1, tl, tm);
	else upd(pos, x, v << 1 | 1, tm + 1, tr);
	t[v] = max(t[v << 1], t[v << 1 | 1]);	
}

void solve () {
	cin >> n >> k >> R;
	for (int i = 1; i <= n; i++) cin >> a[i], cnt[a[i]]++;
	for (int i = 1; i <= R; i++) {
		int x, y;
		cin >> x >> y;
		b[x] = y;
	}
	for (int i = 0; i < k; i++) {
		if (cnt[i] < b[i]) cout << "impossible\n", exit(0);
	}      
	build();
	int l = 1, r = 1, ans = inf;
	while (l <= r && r <= n) {
		while (r <= n && t[1] > 0) upd(a[r], -1), r++;
		if (t[1] == 0) ans = min(ans, r - l);
		upd(a[l], 1), l++; 
	}
	if (ans == inf) cout << "impossible\n", exit(0);
	cout << ans;
	cout << '\n';
}

bool testcases = 0;

signed main() {
#ifdef ONLINE_JUDGE
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
#endif
	cin.tie(0) -> sync_with_stdio(0);
	int test = 1;
	if (testcases) cin >> test;
	for (int cs = 1; cs <= test; cs++) {
		solve();
	}
}

Compilation message

dna.cpp: In function 'void build(long long int, long long int, long long int)':
dna.cpp:45:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   45 |  int tm = tl + tr >> 1;
      |           ~~~^~~~
dna.cpp: In function 'void upd(long long int, long long int, long long int, long long int, long long int)':
dna.cpp:55:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   55 |  int tm = tl + tr >> 1;
      |           ~~~^~~~

Subtask #1
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Incorrect 1 ms 6492 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #2
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 8660 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Incorrect 1 ms 6488 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 8536 KB Output is correct
2 Correct 10 ms 8664 KB Output is correct
3 Correct 13 ms 8540 KB Output is correct
4 Correct 11 ms 8664 KB Output is correct
5 Correct 42 ms 10840 KB Output is correct
6 Correct 12 ms 8540 KB Output is correct
7 Correct 9 ms 8540 KB Output is correct
8 Correct 48 ms 12760 KB Output is correct
9 Correct 35 ms 10720 KB Output is correct
10 Correct 14 ms 8540 KB Output is correct
11 Correct 2 ms 6620 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 2 ms 8732 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6488 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Incorrect 1 ms 6488 KB Output isn't correct
23 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 12888 KB Output is correct
2 Correct 49 ms 12880 KB Output is correct
3 Correct 46 ms 12888 KB Output is correct
4 Correct 10 ms 8792 KB Output is correct
5 Correct 22 ms 10588 KB Output is correct
6 Correct 59 ms 15184 KB Output is correct
7 Correct 28 ms 10840 KB Output is correct
8 Correct 38 ms 12888 KB Output is correct
9 Correct 10 ms 8680 KB Output is correct
10 Correct 10 ms 8540 KB Output is correct
11 Correct 16 ms 8672 KB Output is correct
12 Correct 11 ms 8540 KB Output is correct
13 Correct 42 ms 10720 KB Output is correct
14 Correct 12 ms 8540 KB Output is correct
15 Correct 9 ms 8540 KB Output is correct
16 Correct 52 ms 12928 KB Output is correct
17 Correct 36 ms 10844 KB Output is correct
18 Correct 16 ms 8540 KB Output is correct
19 Correct 2 ms 6620 KB Output is correct
20 Correct 1 ms 6488 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct
22 Correct 2 ms 8540 KB Output is correct
23 Correct 2 ms 6620 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6496 KB Output is correct
27 Correct 1 ms 6488 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct
30 Incorrect 1 ms 6492 KB Output isn't correct
31 Halted 0 ms 0 KB -