Submission #37665

#	Time	Username	Problem	Language	Result	Execution time	Memory
37665		szawinis	Lightning Conductor (POI11_pio)	C++14	100 / 100	399 ms	5932 KiB

pio

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 5e5+1;

int n, h[N], res[N];

void solve(int l, int r, int optL, int optR) {
	if(l > r) return;
	int mid = l+r >> 1, opt = optL;
	for(int i = optL; i <= min(optR, mid); i++)
		if(h[i] + sqrt(mid - i) > h[opt] + sqrt(mid - opt))
			opt = i;
	res[mid] = max(h[opt] + (int) ceil(sqrt(mid - opt)) - h[mid], res[mid]);
	solve(l, mid-1, optL, opt);
	solve(mid+1, r, opt, optR);
}

int main() {
	scanf("%d", &n);
	for(int i = 0; i < n; i++) scanf("%d", &h[i]);
	solve(0, n-1, 0, n-1);
	reverse(h, h+n);
	reverse(res, res+n);
	solve(0, n-1, 0, n-1);
	reverse(h, h+n);
	reverse(res, res+n);
	for(int i = 0; i < n; i++) printf("%d\n", res[i]);
}

Compilation message (stderr)

pio.cpp: In function 'void solve(int, int, int, int)':
pio.cpp:10:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int mid = l+r >> 1, opt = optL;
             ^
pio.cpp: In function 'int main()':
pio.cpp:20:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
pio.cpp:21:47: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i = 0; i < n; i++) scanf("%d", &h[i]);
                                               ^

• Subtask 1: 9 / 9
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 9 / 9
• Subtask 6: 9 / 9
• Subtask 7: 9 / 9
• Subtask 8: 9 / 9
• Subtask 9: 9 / 9
• Subtask 10: 9 / 9
• Subtask 11: 10 / 10