Submission #614189

#	Time	Username	Problem	Language	Result	Execution time	Memory
614189		Apiram	Aliens (IOI07_aliens)	C++14	30 / 100	4 ms	316 KiB

aliens

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

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	int n,x,y;cin>>n>>x>>y;
	--x,--y;
	auto examine = [&](int xx,int yy){
		if (xx + 1 > n || yy + 1 > n || xx + 1<=0 || yy + 1<=0)return false;
		cout<<"examine "<<xx + 1<<" "<<yy + 1<<endl;
		string s;cin>>s;
		return s == "true";
	};
	auto answer = [&](int xx,int yy){
		cout<<"solution "<<xx + 1<<" "<<yy + 1<<endl;
	};
	while (true){
		int pos = -1;
		for (int i = 0;i<30;++i){
			if (examine(x - (1<<i),y)){
				pos = i;
			}
			else break;
		}
		if (pos == -1)break;
		x-=(1<<pos);
	}
	int m = 0;
	while (true){
		int pos = -1;
		for (int i = 0;i<30;++i){
			if (examine(x + (1<<i) + m,y)){
				pos = i;
			}
			else break;
		}
		if (pos == -1)break;
		m+=(1<<pos);
	}
	while (true){
		int pos = -1;
		for (int i = 0;i<30;++i){
			if (examine(x,y - (1<<i))){
				pos = i;
			}
			else break;
		}
		if (pos == -1)break;
		y-=(1<<pos);
	}
	//cout<<x<<" "<<y<<" "<<m<<'\n';
	int levelx = 0;
	if (examine(x + 4 * (m + 1) + m,y)){
		levelx = 1;
	}
	else if (examine(x + 2 * (m + 1) + m,y)){
		levelx = 2;
	}
	else levelx = 3;
	int levely = 0;
	if (examine(x,y + 4 * (m + 1) + m)){
		levely = 1;
	}
	else if (examine(x,y + 2 * (m + 1) + m)){
		levely = 2;
	}
	else levely = 3;
	if (levelx == 1 && levely == 1){
		answer(x + (m + 1) + m + (m + 2)/2, y + (m + 1) + m + (m + 2)/2);
	}
	else if (levelx ==  1 && levely == 2){
		answer(x + (m + 1) + m + (m + 2)/2, y + (m + 1)/2);
	}
	else if (levelx == 1 && levely == 3){
		y+=m;
		answer(x + (m + 1) + m + (m + 2)/2,y - (m + 1) + m + (m + 2)/2);
	}
	else if (levelx == 2 && levely == 1){
		x+=(m + 1)/2;
		answer(x,y + (m + 1) + m + (m + 2)/2);
	}
	else if (levelx ==  2 && levely == 2){
		if (examine(x + m + 4 * (m + 1),y + m + 4 * (m + 1))){
			answer(x + m + (m + 2)/2,y +  m + (m + 2)/2);
		}
		else{
			answer(x + (m + 1)/2,y + (m + 1)/2);
		}
	}
	else if (levelx == 2 && levely == 3){
		if (examine(x - 4 * (m + 1),y)){
			x += (m + 1)/2;
			answer(x,y - (m + 1) - (m + 2)/2);
		}
		else{
			y+=m;
			answer(x + m + (m + 2)/2,y - m - (m + 2)/2);
		}
	}
	else if (levelx == 3 && levely == 1){
		x+=m;
		answer(x - m - (m + 1) - (m + 2)/2,y + m + (m + 1) + (m + 2)/2);
	}
	else if (levelx == 3 && levely == 2){
		if (examine(x - 2 * (m + 1),y - 2 * (m + 1))){
			y +=(m + 1)/2;
			answer(x - m - (m + 2)/2,y);
		}
		else{
			y+=m;
			answer(x - (m + 2)/2 , y + (m + 2)/2);
		}
	}
	else if (levelx == 3 && levely == 3){
		if (examine(x,y - 4 * (m + 1))){
			answer(x - m - (m + 2)/2,y - m - (m + 2)/2);
		}
		else{
			answer(x - (m + 2)/2,y - (m + 2)/2);
		}
	}
	return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 10 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 10 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10