Submission #796428

#	Time	Username	Problem	Language	Result	Execution time	Memory
796428		TheSahib	Gap (APIO16_gap)	C++14	100 / 100	42 ms	2228 KiB

gap

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

#define ll long long
#define pii pair<int, int>

using namespace std;

const ll MAX = 1000000000000000000ll;

ll findGap(int T, int N)
{
    if(T == 1){
        ll l = 0, r = MAX;
        vector<ll> v;
        while(l <= r && v.size() < N){
            ll mn, mx;
            MinMax(l, r, &mn, &mx);
            v.push_back(mn);
            v.push_back(mx);
            l = mn + 1;
            r = mx - 1;
        }
        sort(v.begin(), v.end());
        ll ans = 1;
        for (int i = 1; i < v.size(); i++)
        {
            ans = max(ans, v[i] - v[i - 1]);
        }
        return ans;
    }
    ll mn, mx;
    MinMax(0, MAX, &mn, &mx);
    ll ans = (mx - mn + 1) / N;
    ll p = mn;
    while(p < mx){
        if(p + ans >= mx) break;
        ll l = 0, h = 0;
        ll dist = ans + 1;
        while(true){
            MinMax(p + 1, p + dist, &l, &h);
            if(l == -1){
                dist *= 2;
                continue;
            }
            ans = max(ans, l - p);
            p = h;
            break;
        }
    }
    return ans;
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:16:34: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   16 |         while(l <= r && v.size() < N){
      |                         ~~~~~~~~~^~~
gap.cpp:26:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |         for (int i = 1; i < v.size(); i++)
      |                         ~~^~~~~~~~~~

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