Submission #624460

#	Time	Username	Problem	Language	Result	Execution time	Memory
624460		socpite	Gap (APIO16_gap)	C++14	59.02 / 100	54 ms	2320 KiB

gap

#include "gap.h"
#include<bits/stdc++.h>
using namespace std;

#define f first
#define s second

typedef long long ll;

ll ans = 0;

int n;

bool cmp(pair<ll, ll> a, pair<ll, ll> b){return b.f-a.f < b.s - a.s;}

void solve(ll l, ll r, ll ele){
    if(r-l <= ans)return;
    ll dist;
    if(ele >= 5)dist = min((r-l+ele*2)/ele*2, r-l-1);
    else dist = (r-l+ele)/ele;
    vector<pair<ll, ll>> A;
    for(ll i = l;  i <= r; i+=dist){
        pair<ll, ll> tmp;
        MinMax(i, min(i+dist-1, r), &tmp.f, &tmp.s);
        if(tmp.s > 0){
            ele -= 1+(tmp.f != tmp.s);
            A.push_back(tmp);
        }
    }
    for(int i = 1; i < A.size(); i++){
        if(A[i-1].f != -1 && A[i].f != -1)ans = max(ans, A[i].f - A[i-1].s);
    }
    sort(A.begin(), A.end(), cmp);
    reverse(A.begin(), A.end());
    for(auto v: A)solve(v.f, v.s, ele+1+(v.f != v.s));
}

long long findGap(int T, int N)
{
    n = N;
    solve(0, 1e18, N);
    return ans;
}

Compilation message (stderr)

gap.cpp: In function 'void solve(ll, ll, ll)':
gap.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for(int i = 1; i < A.size(); i++){
      |                    ~~^~~~~~~~~~

• Subtask 1: 0 / 30
• Subtask 2: 59.0203916407 / 70