Submission #29554

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
29554	2017-07-20T06:03:27 Z	김동현(#1239)	Lightning Conductor (POI11_pio)	C++14	45 / 100	156 ms	13752 KB

pio

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;

int n;
ll h[500010], la[500010], ra[500010];

struct CHT{
	struct Cnv{ ll a, b; };
	ld inv(Cnv p, ll y){
		return sqrt(ld(y - p.b)) + p.a;
	}
	ll iinv(Cnv p, ll y){
		ll s = 0, e = 710;
		while(s <= e){
			ll m = (s + e) / 2;
			if(m * m >= y - p.b) e = m - 1;
			else s = m + 1;
		}
		return s + p.a;
	}
	deque<Cnv> dq;
	int r;
	void ini(){ dq.clear(); r = 0; }
	void upd(ll a, ll b){
		Cnv cur = {a, b};
		if(!dq.empty() && dq.back().a >= cur.a) return;
		while(dq.size() > 1 && inv(dq[r - 1], cur.b) <= inv(dq[r - 2], cur.b)){ dq.pop_back(); r--; }
		dq.push_back(cur); r++;
	}
	ll get(ll y){
		if(dq.empty()) return 0;
		while(dq.size() > 1 && inv(dq[0], y) <= inv(dq[1], y)) dq.pop_front();
		return iinv(dq[0], y);
	}
} C;

void f(ll *a){
	C.ini();
	for(int i = 1; i <= n; i++){
		a[i] = max(h[i], C.get(i));
		C.upd(h[i], i);
	}
}

int main(){
	scanf("%d", &n);
	for(int i = 1; i <= n; i++) scanf("%lld", h + i);
	f(la);
	reverse(h + 1, h + n + 1);
	f(ra);
	reverse(h + 1, h + n + 1);
	for(int i = 1; i <= n; i++) printf("%lld\n", max(la[i], ra[n + 1 - i]) - h[i]);
}

Compilation message

pio.cpp: In function 'int main()':
pio.cpp:48:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
pio.cpp:49:50: 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("%lld", h + i);
                                                  ^

Subtask #1

9.0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	13752 KB	Output is correct

Subtask #2

9.0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	13752 KB	Output is correct

Subtask #3

9.0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	13752 KB	Output is correct

Subtask #4

9.0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	9 ms	13752 KB	Output is correct

Subtask #5

9.0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	13 ms	13752 KB	Output is correct

Subtask #6

0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	19 ms	13752 KB	Output is correct
2	Correct	13 ms	13752 KB	Output is correct
3	Incorrect	16 ms	13752 KB	Output isn't correct

Subtask #7

0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	26 ms	13752 KB	Output is correct
2	Correct	26 ms	13752 KB	Output is correct
3	Incorrect	26 ms	13752 KB	Output isn't correct

Subtask #8

0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	63 ms	13752 KB	Output is correct
2	Correct	76 ms	13752 KB	Output is correct
3	Incorrect	76 ms	13752 KB	Output isn't correct

Subtask #9

0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	106 ms	13752 KB	Output is correct
2	Correct	93 ms	13752 KB	Output is correct
3	Incorrect	146 ms	13752 KB	Output isn't correct

Subtask #10

0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	156 ms	13752 KB	Output is correct
2	Correct	153 ms	13752 KB	Output is correct
3	Incorrect	156 ms	13752 KB	Output isn't correct

Subtask #11

0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	146 ms	13752 KB	Output isn't correct
2	Halted	0 ms	0 KB	-