Submission #1260176

#	Time	Username	Problem	Language	Result	Execution time	Memory
1260176		Szymon_Pilipczuk	Gap (APIO16_gap)	C++20	100 / 100	42 ms	2240 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(),a.end()
#define rep(a,b) for(int a = 0;a<b;a++)
const int inf = 1e9;
const ll infl = 1e18;
ll findGap(int t,int n)
{
    if(t == 1)
    {
        vector<ll> cc;
        ll a = 0,b = infl;
        ll c,d;
        rep(i,(n+1)/2)
        {
            MinMax(a,b,&c,&d);
            cc.pb(c);
            if(c != d)cc.pb(d);
            a = c+1;
            b = d-1;
        }
        sort(all(cc));
        ll ans = 0;
        rep(i,n-1)
        {
            ans = max(ans,cc[i+1]-cc[i]);
        }
        return ans;

    }
    else if(t == 2)
    {
        ll ans = 0;
        ll a,b;
        MinMax(0LL,infl,&a,&b);
        ll minans = (b-a + n-2)/(n-1);
        ll prev = a;
        for(ll i = a+1;i<b;i += minans+1)
        {
            ll c,d;
            MinMax(i,min(i+minans,b-1),&c,&d);
            if(c == -1) continue;
            ans = max(ans,c-prev);
            prev = d;
        }
        ans = max(ans,b-prev);
        return ans;
    }
}

Compilation message (stderr)

gap.cpp: In function 'll findGap(int, int)':
gap.cpp:55:1: warning: control reaches end of non-void function [-Wreturn-type]
   55 | }
      | ^

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