Submission #30922

# Submission time Handle Problem Language Result Execution time Memory
30922 2017-08-01T06:18:14 Z sean617 Gap (APIO16_gap) C++
30 / 100
79 ms 11600 KB
#include "gap.h"
#define SZ 100005
#include <iostream>
#include <algorithm>
#include <vector>
typedef long long ll;

using namespace std;
ll n, x = -1, num = 1e18 + 5, a[SZ];
vector<ll> b;

void f(ll p, ll q) {
	ll mn1, mx1, mn2, mx2;
	mn1 = mx1 = mn2 = mx2 = -1;
	if (p > q || b.size() == n || q - p <= x) return;
	if (q - p <= num) {
		MinMax(p, q, &mn1, &mx1);
		if (mn1 == -1) return;
		b.push_back(mn1);
		if (mn1 != mx1) b.push_back(mx1);
		f(mn1 + 1, mx1 - 1);
	} else {
		ll md = (p + q) / 2;
		MinMax(p, md, &mn1, &mx1);
		if (p < q) MinMax(md + 1, q, &mn2, &mx2);
		if (mn1 == -1 && mx1 == -1 && mn2 == -1 && mx2 == -1) x = max(x, (q + 1) - (p - 1));
		if (mn1 != -1) {
			b.push_back(mn1);
			if (mn1 != mx1) b.push_back(mx1);
			f(mn1 + 1, mx1 - 1);
		}
		if (p < q && mn2 != -1) {
			b.push_back(mn2);
			if (mn2 != mx2) b.push_back(mx2);
			f(mn2 + 1, mx2 - 1);
		}
	}
}

long long findGap(int T, int N)
{
	ll st = 0, en = 1e18, i = 0, j = N - 1, mn, mx, ans;
	n = N;
	if (T == 1) {
		while (i <= j) {
			MinMax(st, en, &mn, &mx);
			a[i] = mn;
			a[j] = mx;
			st = mn + 1;
			en = mx - 1;
			i++;
			j--;
		}
		ans = a[1] - a[0];
		for (i = 1; i < N - 1; i++) {
			ans = max(ans, a[i + 1] - a[i]);
		}
	} else {
		MinMax(st, en, &mn, &mx);
		b.push_back(mn);
		b.push_back(mx);
		x = (mx - mn) / (N - 1);
		if ((mx - mn) % (N - 1) > 0) x++;
		f(mn + 1, mx - 1);
		sort(b.begin(), b.end());
		ans = x;
		for (i = 0; i < b.size() - 1; i++) {
			ans = max(ans, b[i + 1] - b[i]);
		}
	}
	return ans;
}

Compilation message

gap.cpp: In function 'void f(ll, ll)':
gap.cpp:15:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if (p > q || b.size() == n || q - p <= x) return;
                        ^
gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:67:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (i = 0; i < b.size() - 1; i++) {
                 ^
# Verdict Execution time Memory Grader output
1 Correct 0 ms 5928 KB Output is correct
2 Correct 0 ms 5928 KB Output is correct
3 Correct 0 ms 5928 KB Output is correct
4 Correct 0 ms 5928 KB Output is correct
5 Correct 0 ms 5928 KB Output is correct
6 Correct 0 ms 5928 KB Output is correct
7 Correct 0 ms 5928 KB Output is correct
8 Correct 0 ms 5928 KB Output is correct
9 Correct 0 ms 5928 KB Output is correct
10 Correct 0 ms 5928 KB Output is correct
11 Correct 0 ms 5928 KB Output is correct
12 Correct 0 ms 5928 KB Output is correct
13 Correct 0 ms 5928 KB Output is correct
14 Correct 0 ms 5928 KB Output is correct
15 Correct 0 ms 5928 KB Output is correct
16 Correct 13 ms 5928 KB Output is correct
17 Correct 19 ms 5928 KB Output is correct
18 Correct 16 ms 5928 KB Output is correct
19 Correct 16 ms 5928 KB Output is correct
20 Correct 9 ms 5928 KB Output is correct
21 Correct 69 ms 5928 KB Output is correct
22 Correct 46 ms 5928 KB Output is correct
23 Correct 56 ms 5928 KB Output is correct
24 Correct 46 ms 5928 KB Output is correct
25 Correct 43 ms 5928 KB Output is correct
26 Correct 46 ms 5928 KB Output is correct
27 Correct 59 ms 5928 KB Output is correct
28 Correct 56 ms 5928 KB Output is correct
29 Correct 59 ms 5928 KB Output is correct
30 Correct 43 ms 5928 KB Output is correct
31 Correct 0 ms 5928 KB Output is correct
32 Correct 0 ms 5928 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 5928 KB Output is correct
2 Partially correct 0 ms 5928 KB Partially correct
3 Partially correct 0 ms 5928 KB Partially correct
4 Partially correct 0 ms 5928 KB Partially correct
5 Partially correct 0 ms 5928 KB Partially correct
6 Partially correct 0 ms 5928 KB Partially correct
7 Partially correct 0 ms 5928 KB Partially correct
8 Partially correct 0 ms 5928 KB Partially correct
9 Partially correct 0 ms 5928 KB Partially correct
10 Partially correct 0 ms 5928 KB Partially correct
11 Partially correct 0 ms 5928 KB Partially correct
12 Partially correct 0 ms 5928 KB Partially correct
13 Partially correct 0 ms 5928 KB Partially correct
14 Partially correct 0 ms 5928 KB Partially correct
15 Partially correct 0 ms 5928 KB Partially correct
16 Partially correct 13 ms 7316 KB Partially correct
17 Partially correct 9 ms 7312 KB Partially correct
18 Partially correct 13 ms 7316 KB Partially correct
19 Partially correct 6 ms 7316 KB Partially correct
20 Partially correct 13 ms 7316 KB Partially correct
21 Incorrect 79 ms 11596 KB Expected int32, but "2500100000" found
22 Incorrect 63 ms 11600 KB Expected int32, but "2500099997" found
23 Incorrect 63 ms 11600 KB Expected int32, but "2500100000" found
24 Incorrect 63 ms 11596 KB Expected int32, but "2500100000" found
25 Incorrect 56 ms 11600 KB Expected int32, but "2500100000" found
26 Incorrect 56 ms 11600 KB Expected int32, but "2500100000" found
27 Incorrect 76 ms 11600 KB Expected int32, but "2500100000" found
28 Incorrect 63 ms 11596 KB Expected int32, but "2500099997" found
29 Incorrect 73 ms 11600 KB Expected int32, but "2500100000" found
30 Incorrect 53 ms 11600 KB Expected int32, but "2500099952" found
31 Partially correct 0 ms 5928 KB Partially correct
32 Partially correct 0 ms 5928 KB Partially correct