Submission #418294

#	Time	Username	Problem	Language	Result	Execution time	Memory
418294		JediMaster11	Meetings (IOI18_meetings)	C++17	Compilation error	0 ms	0 KiB

meetings

#include <bits/stdc++.h>

using namespace std;
#define fo(a, b, c) for (int a = b; a < c; a++)
#define ll long long
#define print(x) cout << x << "\n";

ll recur(int l, int r, int *h)
{ // r is non-inclsuive

    if (r - l <=1)
    {
        return h[l];
    }

    int maxH = -1;

    fo(i, l, r)
    {

        maxH = max(maxH, h[i]);
    }

    vector<pair<pair<int, int>, ll>> aves;
    // stores the left and right, and then the sum of the middle

    int leftH = l;
    fo(i, l, r)
    {
        if (h[i] == maxH)
        {

            ll tmp = recur(leftH, i, h);
            aves.push_back({{leftH, i}, tmp});
            leftH = i + 1;
        }
    }

    if (leftH != r)
    {
        ll tmp = recur(leftH, r, h);
        aves.push_back({{leftH, r}, tmp});
    }



    int index=-1;
    double minAve = maxH + 1;

    fo(i,0,aves.size()){
        double maxtmp = 0.0 + aves[i].second / (aves[i].first.second - aves[i].first.first+1);

        if(maxtmp < minAve){
            minAve=maxtmp;
            index=i;
        }
    }


    ll numMax =  (r - aves[index].first.second) + (aves[index].first.first-l);

    return 1ll * numMax * maxH + aves[index].second;


}
//looking for smallest ave

// h - heights
// l, r - left and right bounds of each meeting
ll minCosts[750000];
ll *minimum_costs(int *h, int *l, int *r)
{

    int numMeetings = sizeof(l) / sizeof(l[0]);
    // ll minCosts[numMeetings];

    fo(i, 0, numMeetings)
    {

        minCosts[i] = recur(l[i], r[i] + 1, h);
    }

    return minCosts;
}

// int main()
// {

//     ios::sync_with_stdio(0);
//     cin.tie(0);

//     int h[] = {2, 4, 3, 5};
//     int l[] = {0, 1};
//     int r[] = {2, 3};

//     ll* tm = minimum_costs(h, l, r);

//     fo(i,0,sizeof(l)/sizeof(l[0])){
//         print(tm[i]);
//     }
// }

Compilation message (stderr)

meetings.cpp: In function 'long long int recur(int, int, int*)':
meetings.cpp:4:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define fo(a, b, c) for (int a = b; a < c; a++)
......
   50 |     fo(i,0,aves.size()){
      |        ~~~~~~~~~~~~~~~                 
meetings.cpp:50:5: note: in expansion of macro 'fo'
   50 |     fo(i,0,aves.size()){
      |     ^~
meetings.cpp: In function 'long long int* minimum_costs(int*, int*, int*)':
meetings.cpp:74:33: warning: division 'sizeof (int*) / sizeof (int)' does not compute the number of array elements [-Wsizeof-pointer-div]
   74 |     int numMeetings = sizeof(l) / sizeof(l[0]);
      |                       ~~~~~~~~~~^~~~~~~~~~~~~~
meetings.cpp:71:32: note: first 'sizeof' operand was declared here
   71 | ll *minimum_costs(int *h, int *l, int *r)
      |                           ~~~~~^
/usr/bin/ld: /tmp/ccio3c1C.o: in function `main':
grader.cpp:(.text.startup+0x1d6): undefined reference to `minimum_costs(std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status