Submission #713098

#	Time	Username	Problem	Language	Result	Execution time	Memory
713098		Vu_CG_Coder	Gap (APIO16_gap)	C++14	Compilation error	0 ms	0 KiB

gap

#include <stdio.h>
#include <stdlib.h>
#include <vector>
using namespace std;

#include "gap.h"

static void my_assert(int k){ if (!k) exit(1); }

static int subtask_num, N;
static long long A[100001];
static long long call_count;
int a[100100];

long long findGap(int, int);

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;
}

int main()
{
	FILE *in = stdin, *out = stdout;
	my_assert(2 == fscanf(in, "%d%d", &subtask_num, &N));
	my_assert(1 <= subtask_num && subtask_num <= 2);
	my_assert(2 <= N && N <= 100000);
	for (int i=1;i<=N;i++) my_assert(1 == fscanf(in, "%lld", A+i));
	for (int i=1;i<N;i++) my_assert(A[i] < A[i+1]);
	fprintf(out, "%lld\n", findGap(subtask_num, N));
	fprintf(out, "%lld\n", call_count);
}

long long findGap(int t , int n)
{
    long long l = 0 , r = 1e18;
    vector <long long> kq;

    for (int i = 1 ; i <= (n + 1)/2 ; i++)
    {
        ll s , t;
        MinMax(l,r,s,t);
        kq.push_back(s);
        kq.push_back(t);
        l = s + 1;
        r = t - 1;
    }

    sort(kq.begin(),kq.end());
    long long res = 0;

    for (int i = 1 ; i < kq.size() ; i++)
        res = max(res,a[i] - a[i - 1]);
    return res;
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:60:9: error: 'll' was not declared in this scope; did you mean 'l'?
   60 |         ll s , t;
      |         ^~
      |         l
gap.cpp:61:20: error: 's' was not declared in this scope
   61 |         MinMax(l,r,s,t);
      |                    ^
gap.cpp:68:5: error: 'sort' was not declared in this scope; did you mean 'qsort'?
   68 |     sort(kq.begin(),kq.end());
      |     ^~~~
      |     qsort
gap.cpp:71:24: 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 = 1 ; i < kq.size() ; i++)
      |                      ~~^~~~~~~~~~~
gap.cpp:72:38: error: no matching function for call to 'max(long long int&, int)'
   72 |         res = max(res,a[i] - a[i - 1]);
      |                                      ^
In file included from /usr/include/c++/10/vector:60,
                 from gap.cpp:3:
/usr/include/c++/10/bits/stl_algobase.h:254:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
gap.cpp:72:38: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   72 |         res = max(res,a[i] - a[i - 1]);
      |                                      ^
In file included from /usr/include/c++/10/vector:60,
                 from gap.cpp:3:
/usr/include/c++/10/bits/stl_algobase.h:300:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/10/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
gap.cpp:72:38: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
   72 |         res = max(res,a[i] - a[i - 1]);
      |                                      ^