Submission #914422

#	Time	Username	Problem	Language	Result	Execution time	Memory
914422		manizare	Bubble Sort 2 (JOI18_bubblesort2)	C++14	Compilation error	0 ms	0 KiB

bubblesort2

#include <bits/stdc++.h>
#include "bubblesort2.h"
#pragma GCC optimize("O3,unroll-loops")
#define pb push_back
#define F first
#define S second 
#define all(a) a.begin(),a.end()
#define pii pair <int,int>
#define PII pair<pii , pii>
#define ld long double
#define int long long
#define sz(v) (int)v.size()
#define rep(i , a , b) for(int i=a;i <= (b);i++)
#define per(i , a , b) for(int i=a;i >= (b);i--)
using namespace std ;   
const int maxn = 1e6 + 10 , inf= 2e9 , mod = 1e9 + 7 , sq = 360 ;
int fen[4*maxn] ;
vector <int> res , cm;

void upd(int x ,int w){
    x++;
    while(x <= sz(cm)){
        fen[x]+=w;
        x+=x&-x; 
    }
}
int que(int x){
    x++;int ans =0 ;
    while(x){   
        ans+=fen[x];
        x-=x&-x;
    }
    return ans ;
}

std::vector<int> countScans(std::vector<int>A ,  std::vector<int>X, std::vector <int> V){
    int n = sz(A) , q =sz(X) ;     
    rep(i , 0 , n-1)cm.pb(A[i]);
    rep(i , 0 ,q-1)cm.pb(V[i]) ;
    sort(all(cm)) ;
    cm.resize(unique(all(cm))-cm.begin()) ;
    rep(i , 0 , n-1){
        A[i] = lower_bound(all(cm) , A[i]) -cm.begin() ;
    }
    rep(i , 0 , q-1){
        A[X[i]] = lower_bound(all(cm),V[i])-cm.begin() ;
        int ans =0 ;
        rep(j , 0 , n-1){
            ans = max(ans , j-que(A[j])) ;
            upd(A[j] , 1);
        }
        rep(i , 0 , sz(cm))fen[i]=0;
        res.pb(ans);
    }
    return res; 
}

/*
signed main(){
    ios::sync_with_stdio(0);cin.tie(0); 
    int n , q ;
    cin >> n >> q;
    vector <int> a ;
    rep(i , 1, n){
        int x;
        cin >> x ;
        a.pb(x);
    }
    vector <int> X , V ;
    rep(i , 1, q){
        int x, v;
        cin >> x>> v ;
        X.pb(x);V.pb(v);
    }
    vector <int> ans = countScans(a,X,V) ;
    for(int x : ans){
        cout << x << "\n" ;
    }
    return 0;   
}
*/
/*

*/

Compilation message (stderr)

/usr/bin/ld: /tmp/cc6AjIka.o: in function `main':
grader.cpp:(.text.startup+0x19f): 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