Submission #917944

#	Time	Username	Problem	Language	Result	Execution time	Memory
917944		PM1	Triangles (CEOI18_tri)	C++17	15 / 100	1 ms	600 KiB

tri

#include <bits/stdc++.h>
#include "trilib.h"
using namespace std;
const int mxn=50+5;
int n,mark[mxn],ans=1e9;
int main(){
	n=get_n();
	for(int j=1;j<=n;j++){
		int res=0,p=j;
		while(!mark[p]){
			mark[p]=1;
			res++;
			int x=(p==1)?2:1;
			for(int i=1;i<=n;i++){
				if(i!=p && i!=x){
					bool y=is_clockwise(p,x,i);
					if(!y)
						x=i;
				}
			}
			p=x;
		}
		memset(mark,0,sizeof mark);
		ans=min(ans,res);
	}
	give_answer(ans);
	return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 25