Submission #1120956

#	Time	Username	Problem	Language	Result	Execution time	Memory
1120956		ntdaccode	Bubble Sort 2 (JOI18_bubblesort2)	C++17	Compilation error	0 ms	0 KiB

bubblesort2

#include<bits/stdc++.h>
#define fori(i,a,b) for(int i=a;i<=b;i++)
#define int long long
#define pb push_back

using namespace std;

typedef pair<int,int> ii;
typedef tuple<int,int,int> tp;

const int M = 1e6 + 10;
const int N = 1e3 + 10;
const int mod = 1e9 + 7;

int n, q, a[M], bit[M];
void upd(int idx)
{
  while(idx <= n) {
    bit[idx]++;
    idx += idx&(-idx);
  }
}

int get(int idx) {
  int res = 0;
  while(idx > 0) {
    res += bit[idx];
    idx -= idx&(-idx);
  }
  return res;
}

vector<int> countScans(vector<int> A, vector<int> X, vector<int> V)
{
  n = A.size();
  q = X.size();
  vector<int> ans;
  for(int i = 1;i <= n; i++) a[i] = A[i - 1];
  for(int i = 1;i <= q; i++)
  {
    int u,v;
    u = X[i - 1];v = V[i - 1];
    a[u] = v;
    for(int i = 1;i <= n; i++) bit[i] = 0;
    int kq = 0;
    for(int i = n;i != 0; i--) {
        kq = max(kq,get(a[i]));
        upd(a[i]);
    }
    ans.pb(kq);
  }
  return ans;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccHhYQ6E.o: in function `main':
grader.cpp:(.text.startup+0x181): undefined reference to `countScans(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