oj.uz

Submission #392439

# Submission time Handle Problem Language Result Execution time Memory
392439 2021-04-21T06:54:35 Z bayemirov Snowball (JOI21_ho_t2) C++14
33 / 100
 2500 ms 13884 KB 
#include <bits/stdc++.h>
#define ll long long
#define all(x) x.begin(), x.end()
#define pb push_back
#define pii pair<int, int> 
#define fr first
#define sc second
using namespace std;
const int N = 2e5 + 1;
int n, q;
ll a[N], d[N], p[N], pref[N], pos2[N], qr[N], pos1[N];
int t[N * 4], shift = 1;
vector<ll> all;

void update(int u, int val) {
	t[u] = min(t[u], val);
	while (u >>= 1) t[u] = min(t[u + u], t[u + u + 1]);
}

int get(int l, int r) {
	int res = 1e9;
	while (l <= r) {
		if (l & 1) res = min(res, t[l++]);
		if (!(r & 1)) res = min(res, t[r--]);
		l >>= 1;
		r >>= 1;
	}	
	return res;
}


bool check(int pos, ll m) {
	int j = -1;
	ll need = m - a[pos];
	need = lower_bound(all(all), need) - all.begin() + 1;
	j = get(need + shift, N + shift);
	int k = -1;
	need = m - a[pos + 1];
	need = lower_bound(all(all), need) - all.begin();
	k = get(1 + shift, need + shift);
	
	if (j == 1e9) return false;
	if (j > k) return false;
	return true; 
}

bool check2(int pos, ll m) {
	int j = - 1;
	ll need = m - a[pos];
	need = upper_bound(all(all), need) - all.begin();
	j = get(1 + shift, need + shift);
	
	int k = -1;
	need = m - a[pos - 1];
	need = upper_bound(all(all), need) - all.begin() + 1;
	k = get(need + shift, N + shift);
	
	if (j == 1e9) return false;
	if (j > k) return false;
	return true; 
}


int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	cin >> n >> q;
	
	while (shift < N) shift *= 2;
	shift--;
	
	
	for (int i = 0; i < 4 * N; i++) t[i] = 1e9;
	for (int i = 1; i <= n; i++) cin >> a[i];
	ll x = *min_element(a + 1, a + 1 + n);
	ll mn = 1e18;
	
	for (int i = 1; i <= q; i++) cin >> d[i];
	for (int i = 1; i <= q; i++) p[i] = p[i - 1] + d[i], all.pb(p[i]);
	for (int i = 1; i <= q; i++) mn = min(mn, x + p[i]);
	for (int i = 1; i <= n; i++) a[i] += abs(mn) + 1;
	
	sort(all(all));
	all.resize(unique(all(all)) - all.begin());
	
	for (int i = 1; i <= q; i++) pref[i] = lower_bound(all(all), p[i]) - all.begin() + 1;
	for (int i = 1; i <= q; i++) update(pref[i] + shift, i);
	// fnd right
	for (int i = 1; i < n; i++) {
		ll l = a[i] + 1;
		ll r = a[i + 1];
		ll ans = -1;
		while (l <= r) {
			ll m = (l + r) / 2;
			if (check(i, m)) l = m + 1, ans = m;
			else r = m - 1;
		}
		//cout << "right : " << i << " " << ans << endl;
		pos1[i] = ans;
	}
	//fnd left
	for (int i = 2; i <= n; i++) {
		ll l = a[i - 1];
		ll r = a[i] - 1;
		ll ans = -1;
		while (l <= r) {
			ll m = (l + r) / 2;
			if (check2(i, m)) r = m - 1, ans = m;
			else l = m + 1;
		}
		//cout << "left : " << i << " " << ans << endl;
		pos2[i] = ans;
	}
	
	for (int i = 1; i < n; i++) if (pos1[i] != -1) qr[i] += pos1[i] - a[i];
	for (int i = 2; i <= n; i++) if (pos2[i] != -1) qr[i] += a[i] - pos2[i];
	
	qr[1] += abs(min(0ll, *min_element(p + 1, p + 1 + q)));
	qr[n] += max(0ll, *max_element(p + 1, p + 1 + q));
	for (int i = 1; i <= n; i++) cout << qr[i] << endl; 	
	return 0;
}

Subtask #1
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3532 KB Output is correct
2 Correct 4 ms 3532 KB Output is correct
3 Correct 6 ms 3536 KB Output is correct
4 Correct 25 ms 3532 KB Output is correct
5 Correct 23 ms 3584 KB Output is correct
6 Correct 20 ms 3612 KB Output is correct
7 Correct 18 ms 3532 KB Output is correct
8 Correct 17 ms 3532 KB Output is correct
9 Correct 18 ms 3584 KB Output is correct
10 Correct 8 ms 3532 KB Output is correct
11 Correct 8 ms 3532 KB Output is correct
12 Correct 3 ms 3404 KB Output is correct
13 Correct 3 ms 3404 KB Output is correct
14 Correct 5 ms 3404 KB Output is correct
15 Correct 29 ms 3616 KB Output is correct
16 Correct 23 ms 3532 KB Output is correct
17 Correct 18 ms 3616 KB Output is correct
18 Correct 3 ms 3404 KB Output is correct
19 Correct 8 ms 3536 KB Output is correct

Subtask #2
0 / 67.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3532 KB Output is correct
2 Correct 4 ms 3532 KB Output is correct
3 Correct 6 ms 3536 KB Output is correct
4 Correct 25 ms 3532 KB Output is correct
5 Correct 23 ms 3584 KB Output is correct
6 Correct 20 ms 3612 KB Output is correct
7 Correct 18 ms 3532 KB Output is correct
8 Correct 17 ms 3532 KB Output is correct
9 Correct 18 ms 3584 KB Output is correct
10 Correct 8 ms 3532 KB Output is correct
11 Correct 8 ms 3532 KB Output is correct
12 Correct 3 ms 3404 KB Output is correct
13 Correct 3 ms 3404 KB Output is correct
14 Correct 5 ms 3404 KB Output is correct
15 Correct 29 ms 3616 KB Output is correct
16 Correct 23 ms 3532 KB Output is correct
17 Correct 18 ms 3616 KB Output is correct
18 Correct 3 ms 3404 KB Output is correct
19 Correct 8 ms 3536 KB Output is correct
20 Correct 72 ms 9816 KB Output is correct
21 Correct 71 ms 9824 KB Output is correct
22 Correct 75 ms 9868 KB Output is correct
23 Correct 108 ms 9876 KB Output is correct
24 Correct 440 ms 10612 KB Output is correct
25 Execution timed out 2583 ms 13884 KB Time limit exceeded
26 Halted 0 ms 0 KB -