# | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
---|---|---|---|---|---|---|---|
1166588 | 8pete8 | Pictionary (COCI18_pictionary) | C++20 | 241 ms | 8784 KiB |
#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<cassert>
#include<unordered_map>
#include <queue>
#include <cstdint>
#include<cstring>
#include<limits.h>
#include<cmath>
#include<set>
#include<algorithm>
#include <iomanip>
#include<numeric>
#include<bitset>
using namespace std;
#define ll long long
#define f first
#define s second
#define pii pair<int,int>
#define ppii pair<int,pii>
#define vi vector<int>
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define F(n) for(int i=0;i<n;i++)
#define lb lower_bound
#define ub upper_bound
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
#pragma GCC optimize ("03,unroll-lopps")
#define sz(x) (int)((x).size())
#define int long long
using namespace std;
const int mod=1e9+7,mxn=2e5+5,inf=1e18,minf=-1e18,lg=30;
//#undef int
int n,k,m,d,q;
void setIO(string name){
ios_base::sync_with_stdio(0); cin.tie(0);
freopen((name+".in").c_str(),"r",stdin);
freopen((name+".out").c_str(),"w",stdout);
}
int L[mxn+10],R[mxn+10];
int pa[mxn+10];
int find(int u){return pa[u]==u?u:pa[u]=find(pa[u]);}
void merge(int a,int b){
a=find(a),b=find(b);
if(a==b)return;
pa[b]=a;
}
int mx[mxn+10];
int32_t main(){
fastio
cin>>n>>m>>q;
vector<pii>qry(q);
for(int i=0;i<q;i++){
cin>>qry[i].f>>qry[i].s;
L[i]=1,R[i]=m;
}
for(int t=0;t<=lg;t++){
vector<pii>have;
for(int i=0;i<q;i++){
if(L[i]>R[i])continue;
have.pb({L[i]+(R[i]-L[i])/2,i});
}
sort(rall(have));
int cur=m;
for(int i=1;i<=n;i++)pa[i]=i;
for(auto i:have){
while(cur>=i.f){
for(int j=cur;j<=n;j+=cur)merge(j,cur);
cur--;
}
if(find(qry[i.s].f)==find(qry[i.s].s))L[i.s]=i.f+1,mx[i.s]=max(mx[i.s],i.f);
else R[i.s]=i.f-1;
}
}
for(int i=0;i<q;i++)cout<<m-mx[i]+1<<'\n';
}
/*
*/
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