Submission #141274

#	Time	Username	Problem	Language	Result	Execution time	Memory
141274		ngot23	Bubble Sort 2 (JOI18_bubblesort2)	C++11	Compilation error	0 ms	0 KiB

bubblesort2

#include <bits/stdc++.h>
#define rep(i, a, b) for(int i=(a) ; i<=(b)-1 ; ++i)
//#define mp make_pair
//#define pii pair<int, int>
//#define PB push_back
//#define F first
//#define S second
//#define Task ""
using namespace std;
//template <typename T > inline void MIN(T &a, T b) { if(a>b) a=b; }
//template <typename T > inline void MAX(T &a, T b) { if(a<b) a=b; }

const int N=8005;
int n, Q, t[N], L;
vector <int > v, ans, a, id, val;

int get(int id) {
    int ret=0;
    while(id<=L) {
        ret+=t[id];
        id+=id&(-id);
    }
    return ret;
}

void update(int id) {
    while(id) {
        ++t[id];
        id-=id&(-id);
    }
}

vector <int > countScans(vector <int > a, vector <int > id, vector <int > val) {
    vector <int > ret1(Q, 0);

    rep(j, 0, Q) {

        a[id[j]]=val[j];
        v.clear();
        v.resize(n, 0);
        rep(i, 0, n) v[i]=a[i];
        sort(v.begin(), v.end());
        v.resize(unique(v.begin(), v.end())-v.begin());
        L=v.size();
        rep(i, 1, L+1) t[i]=0;

        int mx=0;
        rep(i, 0, n) {
            int r=upper_bound(v.begin(), v.end(), a[i])-v.begin();
            mx=max(mx, get(r+1));
            update(r);
        }
        ret1[j]=mx;
    }
    return ret1;
}

int main() {
    //ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    //freopen(".inp", "r", stdin);
    //freopen(Task".out", "w", stdout);
    cin >> n >> Q;
    a.resize(n);
    id.resize(n);
    val.resize(n);

    rep(i, 0, n) cin >> a[i];
    rep(i, 0, Q) cin >> id[i] >> val[i];
    ans=countScans(a, id, val);
    for(int xx:ans) cout << xx << '\n';
    return 0;
}

Compilation message (stderr)

/tmp/ccbmKjOQ.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/cc9pcx4V.o:bubblesort2.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status