oj.uz

Submission #241628

# Submission time Handle Problem Language Result Execution time Memory
241628 2020-06-24T21:03:48 Z ChrisT Lightning Conductor (POI11_pio) C++17
45 / 100
 403 ms 11512 KB 
#include <bits/stdc++.h>
using namespace std;
using pii = pair<int,int>;
using pib = pair<int,bool>;
using ll = long long;
using ld = long double;
#define all(x) (x).begin(),(x).end()
#ifdef fread_unlocked
#define fread fread_unlocked
#define fwrite fwrite_unlocked
#endif
#define lc ind<<1
#define rc ind<<1|1
const int MN = 501265, MOD = 1e9+7, BASE = 31;
int h[MN], mx[MN], sq[MN];
int get (int x, int y) {
	return h[y] + sq[abs(x-y)];
}
int intersect (int a, int b) { //when does a pass b?
	int low = 1, high = min(a,b) - 1, mid, ans = 0;
	while (low <= high) {
		mid = (low + high) / 2;
		if (get(mid,a) > get(mid,b)) low = (ans = mid) + 1;
		else high = mid - 1;
	}
	return ans;
}
int main () {
	for (int i = 1; i <= 708; i++) sq[i*i]=i;
	for (int i = 501263; i >= 1; i--) if (!sq[i]) sq[i] = sq[i+1];
	int n;
	scanf ("%d",&n);
	for (int i = 1; i <= n; i++) scanf ("%d",h+i);
	deque<int> dq;
	for (int i = n; i >= 1; i--) {
		while ((int)dq.size()>1 && get(i,dq.front()) < get(i,dq[1])) dq.pop_front();
		if (i<n) mx[i] = max(mx[i],get(i,dq.front()));
		while ((int)dq.size() > 1 && intersect(i,dq.back()) > intersect(dq.back(),dq[(int)dq.size()-2])) dq.pop_back();
		dq.push_back(i);
	}
	dq.clear();
	reverse(h+1,h+1+n);
	for (int i = n; i >= 1; i--) {
		while ((int)dq.size()>1 && get(i,dq.front()) < get(i,dq[1])) dq.pop_front();
		if (i<n) mx[n-i+1] = max(mx[n-i+1],get(i,dq.front()));
		while ((int)dq.size() > 1 && intersect(i,dq.back()) > intersect(dq.back(),dq[(int)dq.size()-2])) dq.pop_back();
		dq.push_back(i);
	}
	for (int i = 1; i <= n; i++) printf ("%d\n",max(0,mx[i] - h[n-i+1]));
	return 0;
}

Compilation message

pio.cpp: In function 'int main()':
pio.cpp:32:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d",&n);
  ~~~~~~^~~~~~~~~
pio.cpp:33:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (int i = 1; i <= n; i++) scanf ("%d",h+i);
                               ~~~~~~^~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2304 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2304 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 2304 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 2808 KB Output is correct

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 3192 KB Output is correct

Subtask #6
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 3128 KB Output is correct
2 Correct 33 ms 3456 KB Output is correct
3 Incorrect 50 ms 3576 KB Output isn't correct

Subtask #7
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 3580 KB Output is correct
2 Correct 76 ms 3960 KB Output is correct
3 Incorrect 75 ms 4344 KB Output isn't correct

Subtask #8
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 178 ms 5188 KB Output is correct
2 Correct 168 ms 5496 KB Output is correct
3 Incorrect 172 ms 6008 KB Output isn't correct

Subtask #9
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 279 ms 8568 KB Output is correct
2 Correct 256 ms 10360 KB Output is correct
3 Incorrect 269 ms 10616 KB Output isn't correct

Subtask #10
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 403 ms 11144 KB Output is correct
2 Correct 378 ms 8972 KB Output is correct
3 Incorrect 391 ms 11512 KB Output isn't correct

Subtask #11
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 401 ms 8696 KB Output is correct
2 Correct 366 ms 8912 KB Output is correct
3 Incorrect 381 ms 11512 KB Output isn't correct