Submission #743871

#	Time	Username	Problem	Language	Result	Execution time	Memory
743871		jamielim	Izvanzemaljci (COI21_izvanzemaljci)	C++14	0 / 100	1 ms	312 KiB

izvanzemaljci

#include <bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define mp make_pair
#define pb emplace_back
#define ALL(x) x.begin(),x.end()
#define SZ(x) (int)x.size()
typedef long long ll;
typedef pair<int,int> ii;
typedef pair<ii,ii> i4;
typedef vector<int> vi;
const int MOD=1000000007;
const int INF=1012345678;
const ll LLINF=1012345678012345678LL;
const double PI=3.1415926536;
const double EPS=1e-14;

int n,k;
vector<ii> all;

vector<int> find_one_square(vector<ii> v){
	int minx=INF,maxx=-INF,miny=INF,maxy=-INF;
	for(ii i:v){
		minx=min(minx,i.fi);
		maxx=max(maxx,i.fi);
		miny=min(miny,i.se);
		maxy=max(maxy,i.se);
	}
	int l=max(maxx-minx,maxy-miny);
	return {minx,miny,l};
}

int main(){
	scanf("%d%d",&n,&k);
	int x,y;
	for(int i=0;i<n;i++){
		scanf("%d%d",&x,&y);
		all.pb(x,y);
	}
	if(k==1){
		vector<int> ans=find_one_square(all);
		printf("%d %d %d\n",ans[0],ans[1],ans[2]);
	}else if(k==2){
		int minx=INF,maxx=-INF,miny=INF,maxy=-INF;
		for(ii i:all){
			minx=min(minx,i.fi);
			maxx=max(maxx,i.fi);
			miny=min(miny,i.se);
			maxy=max(maxy,i.se);
		}
		int le=0,ri=2*INF;
		while(le<ri){
			int mi=(le+ri)/2;
			vector<ii> v1,v2;
			for(ii i:all){
				// if this guy is not in the bottom left, add to v1
				if(i.fi>minx+mi||i.se>miny+mi){
					v1.pb(i);
				}
				// if not in the top left, add to v2
				if(i.fi>minx+mi||i.se<maxy-mi){
					v2.pb(i);
				}
			}
			vector<int> res1=find_one_square(v1);
			vector<int> res2=find_one_square(v2);
			if(res1[2]<=mi||res2[2]<=mi){
				ri=mi;
			}else{
				le=mi+1;
			}
		}
		vector<ii> v1,v2;
		for(ii i:all){
			// if this guy is not in the bottom left, add to v1
			if(i.fi>minx+le||i.se>miny+le){
				v1.pb(i);
			}
			// if not in the top left, add to v2
			if(i.fi>minx+le||i.se<maxy-le){
				v2.pb(i);
			}
		}
		vector<int> res1=find_one_square(v1);
		vector<int> res2=find_one_square(v2);
		if(res1[2]<=le){
			printf("%d %d %d\n",res1[0],res1[1],res1[2]);
			printf("%d %d %d\n",minx,miny,le);
		}else{
			printf("%d %d %d\n",res2[0],res2[1],res2[2]);
			printf("%d %d %d\n",minx,maxy-le,le);
		}
	}else{
		
	}
}

Compilation message (stderr)

izvanzemaljci.cpp: In function 'int main()':
izvanzemaljci.cpp:36:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |  scanf("%d%d",&n,&k);
      |  ~~~~~^~~~~~~~~~~~~~
izvanzemaljci.cpp:39:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |   scanf("%d%d",&x,&y);
      |   ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 21
• Subtask 3: 0 / 12
• Subtask 4: 0 / 30
• Subtask 5: 0 / 32