Submission #895994

#	Time	Username	Problem	Language	Result	Execution time	Memory
895994		pcc	Worm Worries (BOI18_worm)	C++14	0 / 100	2 ms	4192 KiB

worm

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

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>


const int mxn = 1e6+10;
int N,M,K;
int dp[mxn];

int ask(int x,int y = 1,int z = 1){
	if(dp[x] != -1)return dp[x];
	cout<<"? "<<x<<' '<<y<<' '<<z<<endl;
	int re;
	cin>>re;
	if(re == -1)exit(0);
	dp[x] = re;
	return re;
}

int main(){
	memset(dp,-1,sizeof(dp));
	cin>>N>>M>>K;
	int l = 1,r = N;
	while(r-l>1){
		int mid = (l+r)>>1;
		if(ask(mid)>=ask(mid+1))r = mid;
		else l = mid+1;
	}
	if(l == r)cout<<"! "<<l<<" 1 1"<<endl;
	else if(ask(l)>ask(r))cout<<"! "<<l<<" 1 1"<<endl;
	else cout<<"! "<<r<<" 1 1"<<endl;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 22
• Subtask 3: 0 / 12
• Subtask 4: 0 / 19
• Subtask 5: 0 / 14
• Subtask 6: 0 / 23