Submission #743652

#	Time	Username	Problem	Language	Result	Execution time	Memory
743652		sword060	Xylophone (JOI18_xylophone)	C++17	0 / 100	0 ms	208 KiB

xylophone

#include "xylophone.h"
#include <bits/stdc++.h>
using namespace std;
void solve(int x){
	int l=3,r=x,mid,bst=2;
	while(l<=r){
		mid=(l+r)/2;
		if(query(1,mid)==x-1)r=mid-1,bst=mid;
		else l=mid+1;
	}
	answer(bst,x);
	int lst=x;
	for(int i=bst+1;bst<=x;bst++){
		lst=query(i-1,i);
		answer(i,lst);
	}
	lst=bst;
	for(int i=bst-1;i>=1;i--){
		lst=query(i,i+1);
		answer(i,lst);
	}
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 36
• Subtask 3: 0 / 53