Submission #974183

#	Time	Username	Problem	Language	Result	Execution time	Memory
974183		Halym2007	Gap (APIO16_gap)	C++17	30 / 100	52 ms	5264 KiB

gap

#include <bits/stdc++.h>
#include "gap.h"
using namespace std;
#define ll long long 
#define pb push_back
#define sz size()



//static void my_assert(int k){ 
//	if (!k) exit(1); 
//}
//
//static int subtask_num, N;
//static long long A[100001];
//static long long call_count;

//long long findGap(int, int);

//void MinMax(long long s, long long t, long long *mn, long long *mx) {
//	int lo = 1, hi = N, left = N+1, right = 0;
//	my_assert(s <= t && mn != NULL && mx != NULL);
//	while (lo <= hi){
//		int mid = (lo+hi)>>1;
//		if (A[mid] >= s) hi = mid - 1, left = mid;
//		else lo = mid + 1;
//	}
//	lo = 1, hi = N;
//	while (lo <= hi){
//		int mid = (lo+hi)>>1;
//		if (A[mid] <= t) lo = mid + 1, right = mid;
//		else hi = mid - 1;
//	}
//	if (left > right) *mn = *mx = -1;
//	else{
//		*mn = A[left];
//		*mx = A[right];
//	}
//	if (subtask_num == 1) call_count++;
//	else if (subtask_num == 2) call_count += right-left+2;
//}

ll findGap(int T, int N) {
	vector <ll> v;
	ll l = 0, r = 1e18, mn = 100, mx = 100;
	if (T == 1 or N <= 2) {
		while (1) {
			if ((int)v.sz == N) break;
			MinMax (l, r, &mn, &mx);
			ll x = mn, y = mx;
			if (x == y) {
				v.pb (x);
				break;
			}
			else {
				v.pb (x);v.pb (y);
			}
			l = x + 1;r = y - 1;
		}
	}
	else {
		MinMax (l, r, &mn, &mx);
		ll gosh = mx - mn - 1;
		v.pb (mn);
		gosh = (gosh + N - 2) / (N - 1);
		v.pb (mx);
		ll ok = mn, ko = mx;
		for (ll i = ok + 1; i <= ko - 1; i += gosh) {
			l = i;r = min (gosh + i - 1, ko - 1);
			MinMax (l, r, &mn, &mx);
			if (mn != -1 and  mx != -1);
			v.pb (mn);v.pb (mx);
		}
	}
	ll jog = 0;
	sort (v.begin(), v.end());
	for (int i = 1; i < (int)v.sz; ++i) {
		jog = max (jog, v[i] - v[i - 1]);
	}
	return jog;
}
/*
1  4
2 3 6 8
*/
//int main() {
//	freopen ("input.txt", "r", stdin);
//	FILE *in = stdin, *out = stdout;
//	my_assert(2 == fscanf(in, "%d%d", &subtask_num, &N));
//	my_assert(1 <= subtask_num && subtask_num <= 2);
//	my_assert(2 <= N && N <= 100000);
//	for (int i=1;i<=N;i++) my_assert(1 == fscanf(in, "%lld", A+i));
//	for (int i=1;i<N;i++) my_assert(A[i] < A[i+1]);
//	fprintf(out, "%lld\n", findGap(subtask_num, N));
//	fprintf(out, "%lld\n", call_count);
//}

• Subtask 1: 30 / 30
• Subtask 2: 0 / 70