Submission #21966

#	Time	Username	Problem	Language	Result	Execution time	Memory
21966		RezwanArefin01	Gap (APIO16_gap)	C++14	100 / 100	73 ms	5144 KiB

gap

#include <bits/stdc++.h>
using namespace std; 
typedef long long ll;
void MinMax(long long, long long, long long*, long long*);
long long findGap(int T, int N) {
	if(T==1) {
		ll pmn, pmx, mn, mx, ret = 0; 
		MinMax(0, (ll)1e18+10, &pmn, &pmx);
		for(int i=1; i<(N+1)/2; i++) {
			MinMax(pmn+1, pmx-1, &mn, &mx);
			ret = max(ret, mn - pmn);
			ret = max(ret, pmx - mx);
			pmn = mn, pmx = mx;
		} ret = max(ret, pmx - pmn);
		return ret;
	} else { 
		ll st, ed, ret = 0;
		MinMax(0, (ll)2e18+10, &st, &ed);
		if(N == 2) return ed - st;
		ll gap = (ed - st + N - 1) / N, prev = st;
		for(ll i=st+1, j=i + gap, b = 1; b<N; i=j+1, j=i+gap) {
			j = min(j, ed-1);
			if(i > j) break;
			ll mn, mx; 
			MinMax(i, j, &mn, &mx);
			if(mn != -1) {
				ret = max(ret, mn - prev);
				prev = mx;
			}
		} return max(ret, ed - prev);
	}
}

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