Submission #366221

#	Time	Username	Problem	Language	Result	Execution time	Memory
366221		mathking1021	Gap (APIO16_gap)	C++17	100 / 100	67 ms	3424 KiB

gap

#include "gap.h"
#include <iostream>
#include <vector>

using namespace std;
typedef long long ll;

ll t, n;

vector<ll> ve1, ve2, ve;

long long findGap(int T, int N)
{
    t = T;
    n = N;
    if(t == 1)
    {
        ll ans = 0;
        ll a, b;
        MinMax(0LL, (ll)2e18, &a, &b);
        ve1.push_back(a);
        ve2.push_back(b);
        for(ll i = 0; i < (n - 1) / 2; i++)
        {
            ll t1, t2;
            MinMax(a + 1, b - 1, &t1, &t2);
            ve1.push_back(t1);
            ve2.push_back(t2);
            a = t1, b = t2;
        }
        for(ll i = 1; i < ve1.size(); i++) ans = max(ans, ve1[i] - ve1[i - 1]);
        for(ll i = 1; i < ve2.size(); i++) ans = max(ans, ve2[i - 1] - ve2[i]);
        ans = max(ans, ve2[ve2.size() - 1] - ve1[ve1.size() - 1]);
        return ans;
    }
    else
    {
        ll a, b;
        MinMax(0LL, (ll)2e18, &a, &b);
        ll c = (b - a + n - 2) / (n - 1);
        ll ans = c;
        ve.push_back(a);
        for(ll i = a + 1; i <= b - 1; i += c)
        {
            ll t3 = -1, t4 = -1;
            MinMax(i, min(i + c - 1, b - 1), &t3, &t4);
            if(t3 != -1)
            {
                ve.push_back(t3);
                ve.push_back(t4);
            }
        }
        ve.push_back(b);
        for(ll i = 1; i < ve.size(); i++)
        {
            ans = max(ans, ve[i] - ve[i - 1]);
        }
        return ans;
    }
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:31:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |         for(ll i = 1; i < ve1.size(); i++) ans = max(ans, ve1[i] - ve1[i - 1]);
      |                       ~~^~~~~~~~~~~~
gap.cpp:32:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |         for(ll i = 1; i < ve2.size(); i++) ans = max(ans, ve2[i - 1] - ve2[i]);
      |                       ~~^~~~~~~~~~~~
gap.cpp:54:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         for(ll i = 1; i < ve.size(); i++)
      |                       ~~^~~~~~~~~~~

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