Submission #1270899

#	Time	Username	Problem	Language	Result	Execution time	Memory
1270899		sitablechair	Bubble Sort 2 (JOI18_bubblesort2)	C++20	Compilation error	0 ms	0 KiB

bubblesort2

#include <bits/stdc++.h>

#define ll long long
#define ldb long double
#define endl '\n'
#define For(i,l,r) for(int i=l;i<=r;i++)
#define ForD(i,r,l) for(int i=r;i>=l;i--)
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
#define sz(x) (signed)x.size()
#define unq(x) x.resize(unique(all(x))-x.begin())
#define F "TASK"
#define fio freopen(F".INP","r",stdin);freopen(F".OUT","w",stdout);

#ifdef NCGM
#include"debug.h"
#else 
#define debug(...) "fr";
#endif

using namespace std;

const int N=5e5+3;

int n,a[N],b[N],sf[N];
vector<pair<int,int>> vt;
vector<int> countScans(vector<int> A,vector<int> X,vector<int> V) {
    n=sz(A);
    vector<int> res;
    For(i,1,n) a[i]=A[i-1];
    For(i,0,sz(X)-1) {
        int x=X[i],v=V[i];
        // x++;
        a[x]=v;
        sf[n+1]=2e9;
        vt.clear();
        For(j,1,n) vt.pb({a[j],j});
        sort(all(vt));
        For(j,1,n) b[vt[j-1].ss]=j;
        ForD(j,n,1) sf[j]=max(sf[j],b[j]);
        int ans=0;
        For(j,1,n) {
            int f=n+1;
            if (j<n && b[n]>b[j]) {
                int l=j+1,r=n;
                while(l<r) {
                    int mid=l+(r-l)/2;
                    if (sf[mid]>b[j]) r=mid;
                    else l=mid+1;
                }
                f=l;
            }
            ans=max(ans,n-b[j]-(n-f+1));
        }
        res.pb(ans);
    }
    return res;
}

int main() {
    cin.tie(0)->sync_with_stdio(0);
    int N,Q;
    cin >> N >> Q;
    vector<int> x,y,z;
    For(i,1,N) {
        int k;
        cin >> k;
        x.pb(k);
    }
    For(i,1,Q) {
        int k,k1;
        cin >> k >> k1;
        y.pb(k),z.pb(k1);
    }
    vector<int> ans=countScans(x,y,z);
    for(auto x: ans) cout << x << endl;
    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccFXPUKH.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc7wqtXV.o:bubblesort2.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status