Submission #47312

#	Time	Username	Problem	Language	Result	Execution time	Memory
47312		Talant	Gap (APIO16_gap)	C++17	100 / 100	85 ms	2284 KiB

gap

#include <bits/stdc++.h>

#include "gap.h"
//#include "grader.cpp"

using namespace std;

const long long M = (1e6 + 5);

long long ans;
long long a[M];
long long l,r = 1e18;
long long ll,rr;

long long findGap(int T, int N)
{
      if (T == 1 ) {
            long long o = (N + 1) / 2;
            ll = 1,rr = N;
            while (o --) {
                  MinMax(l,r,&a[ll],&a[rr]);
                  l = a[ll] + 1,r = a[rr] - 1;
                  ll ++,rr --;
            }
            for (long long i = 1; i < N; i ++)
                  ans = max(ans,a[i + 1] - a[i]);
            return ans;
      }
      else {
            long long l = 0,r = 0;
            MinMax(0,1e18,&l,&r);

            if (N == 2)
                  return (r - l);

            long long last = l;
            long long sz = (r - l - 1 + N - 2) / (N - 1);
            long long s = l + 1,e = 0;

            for (long long i = 1; i < N; i ++) {
                  e = s + sz - 1;
                  if (s > e)
                        break;
                  MinMax(s,e,&l,&r);

                  if (l != -1) {
                        ans = max(ans,l - last);
                        last = r;
                  }
                  s = e + 1;
            }
            return max(ans,(l - last));
      }
}

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