Submission #351904

#	Time	Username	Problem	Language	Result	Execution time	Memory
351904		two_sides	Gap (APIO16_gap)	C++17	100 / 100	59 ms	1312 KiB

gap

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

using namespace std;

long long findGap(int t, int n) {
	long long lo, hi, res;
	MinMax(0, 1000000000000000000ll, &lo, &hi);
	if (t == 1) {
		res = 0;
		for (int i = 1; i < (n + 1) / 2; i++) {
			long long mn, mx;
			MinMax(lo + 1, hi - 1, &mn, &mx);
			res = max(res, mn - lo);
			res = max(res, hi - mx);
			lo = mn; hi = mx;
		}
		res = max(res, hi - lo);
		return res;
	}
	else {
		res = (hi - lo - 1) / (n - 1) + 1;
		long long step = res, pre = lo;
		while (lo < hi) {
			long long mn, mx;
			MinMax(lo, lo + res - 1, &mn, &mx);
			lo += res;
			if (mn == -1) continue;
			res = max(res, mn - pre); pre = mx;
		}
		return res;
	}
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:23:13: warning: unused variable 'step' [-Wunused-variable]
   23 |   long long step = res, pre = lo;
      |             ^~~~

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