Submission #679203

#	Time	Username	Problem	Language	Result	Execution time	Memory
679203		tigar	Gap (APIO16_gap)	C++14	100 / 100	54 ms	3228 KiB

gap

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

using namespace std;

typedef long long ll;

ll mn, mx, niz[100010];
vector<ll>niz2;
/*int T, N;
ll call_count, subtask_num, A[100000];
static void my_assert(int k){ if (!k) exit(1); }
void MinMax(long long s, long long t, long long *mn, long long *mx)
{
	int lo = 1, hi = N, left = N+1, right = 0;
	my_assert(s <= t && mn != NULL && mx != NULL);
	while (lo <= hi){
		int mid = (lo+hi)>>1;
		if (A[mid] >= s) hi = mid - 1, left = mid;
		else lo = mid + 1;
	}
	lo = 1, hi = N;
	while (lo <= hi){
		int mid = (lo+hi)>>1;
		if (A[mid] <= t) lo = mid + 1, right = mid;
		else hi = mid - 1;
	}
	if (left > right) *mn = *mx = -1;
	else{
		*mn = A[left];
		*mx = A[right];
	}
	if (subtask_num == 1) call_count++;
    else if (subtask_num == 2) call_count += right-left+2;
}
*/

ll findGap(int T, int N)
{
    if(T==1)
    {
        int begg=0, endd=N-1;
        ll low_bound=0, up_bound=LONG_LONG_MAX;
        while(begg<=endd)
        {
            MinMax(low_bound, up_bound, &mn, &mx);
            niz[begg]=mn; niz[endd]=mx;
            //cout<<mn<<" "<<mx<<endl;
            begg++; endd--;
            low_bound=mn+1; up_bound=mx-1;
        }

        ll razlika=0;
        for(int i=0; i<N; i++)
        {razlika=max(razlika, niz[i+1]-niz[i]);}
        return razlika;
    }
    else
    {
        MinMax(0, LONG_LONG_MAX, &mn, &mx);
        ll prosek=(mx-mn)/(N-1);
        ll pocetak=mn, kraj=mx;
        while(pocetak<kraj)
        {
            MinMax(pocetak, pocetak+prosek, &mn, &mx);
            if(mn!=-1)niz2.push_back(mn);
            if(mx!=-1)niz2.push_back(mx);
            pocetak=pocetak+prosek+1;
        }
        ll razlika=0;
        for(int i=0; i<niz2.size()-1; i++)razlika=max(razlika,niz2[i+1]-niz2[i]);
        return razlika;
    }
}

/*int main()
{
    cin>>T>>N;
    for(int i=1; i<=N; i++)cin>>A[i];
    cout<<findGap(T, N);
}
/*1 2
1 3
4!!!!*/

Compilation message (stderr)

gap.cpp:82:1: warning: "/*" within comment [-Wcomment]
   82 | /*1 2
      |  
gap.cpp: In function 'll findGap(int, int)':
gap.cpp:71:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |         for(int i=0; i<niz2.size()-1; i++)razlika=max(razlika,niz2[i+1]-niz2[i]);
      |                      ~^~~~~~~~~~~~~~

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