Submission #1014301

#	Time	Username	Problem	Language	Result	Execution time	Memory
1014301		aufan	Gap (APIO16_gap)	C++17	100 / 100	34 ms	2012 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>

using namespace std;

const long long inff = 1e18;

long long findGap(int t, int n) {
	if (t == 1) {
		long long l = 0, r = inff;
		vector<long long> a(n);
		for (int i = 0; i < (n + 1) / 2; i++) {
			long long mn, mx;
			MinMax(l, r, &mn, &mx);
			a[i] = mn;
			a[n - 1 - i] = mx;
			l = mn + 1;
			r = mx - 1;
		}

		long long ans = 0;
		for (int i = 0; i < n - 1; i++) ans = max(ans, a[i + 1] - a[i]);

		return ans;
	} else if (t == 2) {
		long long l = 0, r = inff, mn, mx;
		MinMax(l, r, &mn, &mx);

		long long ans = (mx - mn) / (n - 1), lst = mn;
		l = mn + 1;
		r = mx;
		while (l < r) {
			MinMax(l, l + ans - 1, &mn, &mx);
			l += ans;
			ans = max(ans, mn - lst);
			if (mx != -1) lst = mx;
		}
		ans = max(ans, r - lst);

		return ans;
	}
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type]
   42 | }
      | ^

• Subtask 1: 30 / 30
• Subtask 2: 70 / 70