This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "bubblesort2.h"
#include<bits/stdc++.h>
using namespace std;
vector<int> pos;
int bit[500050];
void add(int x, int d)
{
while(x)
{
bit[x] += d;
x -= x & -x;
}
}
int search(int x)
{
int res = 0;
while(x <= pos.size())
{
res += bit[x];
x += x & -x;
}
return res;
}
vector<int> countScans(vector<int> A, vector<int> X, vector<int> V)
{
for(int x : A) pos.push_back(x);
for(int x : V) pos.push_back(x);
pos.push_back(-1e9);
sort(pos.begin(), pos.end());
pos.resize(unique(pos.begin(), pos.end()) - pos.begin());
vector<int> res;
for(int i=0; i < (int)X.size(); i ++)
{
memset(bit, 0, sizeof(bit));
int ans = 0;
A[X[i]] = V[i];
for(int j=0; j < (int)A.size(); j ++)
{
int ind = lower_bound(pos.begin(), pos.end(), A[j]) - pos.begin();
ans = max(ans, search(ind + 1));
add(ind, 1);
}
res.push_back(ans);
}
return res;
}
// int readInt(){
// int i;
// if(scanf("%d",&i)!=1){
// fprintf(stderr,"Error while reading input\n");
// exit(1);
// }
// return i;
// }
// int main(){
// int N,Q;
// N=readInt();
// Q=readInt();
// std::vector<int> A(N);
// for(int i=0;i<N;i++)
// A[i]=readInt();
// std::vector<int> X(Q),V(Q);
// for(int j=0;j<Q;j++){
// X[j]=readInt();
// V[j]=readInt();
// }
// std::vector<int> res=countScans(A,X,V);
// for(int j=0;j<int(res.size());j++)
// printf("%d\n",res[j]);
// }
Compilation message (stderr)
bubblesort2.cpp: In function 'int search(int)':
bubblesort2.cpp:17:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
17 | while(x <= pos.size())
| ~~^~~~~~~~~~~~~
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