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Submission #785352

# Submission time Handle Problem Language Result Execution time Memory
785352 2023-07-17T08:39:53 Z ono_de206 Radio Towers (IOI22_towers) C++17
14 / 100
 809 ms 23368 KB 
#include "towers.h"
#include<bits/stdc++.h>
using namespace std;

#define in insert
#define all(x) x.begin(),x.end()
#define pb push_back
#define eb emplace_back
#define ff first
#define ss second

//#define int long long
 
typedef long long ll;
typedef vector<int> vi;
typedef set<int> si;
typedef multiset<int> msi;
typedef pair<int, int> pii;
typedef vector<pii> vpii;

const int mxn = 1e5 + 10, inf = 2e9 + 10;
int h[mxn], n, lg[mxn], L[mxn], R[mxn], pre[mxn];
pair<int, int> p[mxn][20];

pair<int, int> get(int l, int r) {
	int k = lg[r - l + 1];
	return max(p[l][k], p[r - (1 << k) + 1][k]);
}

void build(int l, int r) {
	if(l > r) return;
	int pos = get(l, r).ss;
	L[pos] = l;
	R[pos] = r;
	if(l == r) return;
	pre[pos] = 1;
	build(l, pos - 1);
	build(pos + 1, r);
}

void init(int _n, vector<int> H) {
	n = _n;
	for(int i = 1; i <= n; i++) {
		h[i] = H[i - 1];
		p[i][0] = {h[i], i};
	}
	for(int j = 1; j < 20; j++) {
		for(int i = 1; i + (1 << j) - 1 <= n; i++) {
			p[i][j] = max(p[i][j - 1], p[i + (1 << (j - 1))][j - 1]);
		}
	}
	for(int i = 2; i <= n; i++) {
		lg[i] = lg[i / 2] + 1;
	}
	build(1, n);
	for(int i = 1; i <= n; i++) {
		pre[i] += pre[i - 1];
	}
}

int max_towers(int l, int r, int D) {
	l++;
	r++;
	if(l == r) return 1;
	int ans = r - l + 1 - pre[r] + pre[l - 1];
	if(pre[l] - pre[l - 1] == 1 && R[l] == l) ans++;
	if(pre[r] - pre[r - 1] == 1 && L[r] == r) ans++;
	return ans;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 365 ms 13480 KB 2nd lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 336 KB 1st lines differ - on the 1st token, expected: '13', found: '16'
2 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 336 KB 1st lines differ - on the 1st token, expected: '13', found: '16'
2 Halted 0 ms 0 KB -

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 516 ms 18504 KB Output is correct
2 Correct 518 ms 18568 KB Output is correct
3 Correct 536 ms 18596 KB Output is correct
4 Correct 708 ms 18632 KB Output is correct
5 Correct 656 ms 18604 KB Output is correct
6 Correct 705 ms 18660 KB Output is correct
7 Correct 664 ms 18632 KB Output is correct
8 Correct 765 ms 23368 KB Output is correct
9 Correct 809 ms 18604 KB Output is correct
10 Correct 685 ms 22260 KB Output is correct
11 Correct 535 ms 18584 KB Output is correct
12 Correct 719 ms 23228 KB Output is correct
13 Correct 464 ms 18632 KB Output is correct
14 Correct 0 ms 208 KB Output is correct
15 Correct 1 ms 592 KB Output is correct
16 Correct 1 ms 592 KB Output is correct
17 Correct 25 ms 18660 KB Output is correct
18 Correct 25 ms 18620 KB Output is correct
19 Correct 26 ms 18600 KB Output is correct
20 Correct 25 ms 18660 KB Output is correct
21 Correct 26 ms 23192 KB Output is correct
22 Correct 27 ms 18592 KB Output is correct
23 Correct 26 ms 18660 KB Output is correct
24 Correct 25 ms 18580 KB Output is correct
25 Correct 24 ms 18596 KB Output is correct
26 Correct 26 ms 22856 KB Output is correct
27 Correct 1 ms 592 KB Output is correct
28 Correct 1 ms 592 KB Output is correct
29 Correct 1 ms 592 KB Output is correct
30 Correct 1 ms 592 KB Output is correct
31 Correct 1 ms 720 KB Output is correct
32 Correct 1 ms 592 KB Output is correct
33 Correct 1 ms 592 KB Output is correct
34 Correct 1 ms 592 KB Output is correct
35 Correct 1 ms 592 KB Output is correct
36 Correct 1 ms 720 KB Output is correct

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 259 ms 4688 KB 1st lines differ - on the 1st token, expected: '7197', found: '8004'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 336 KB 1st lines differ - on the 1st token, expected: '13', found: '16'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 365 ms 13480 KB 2nd lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -