제출 #1107270

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1107270		jadai007	Aliens (IOI07_aliens)	C++17	0 / 100	2 ms	336 KiB

aliens

#include<bits/stdc++.h>
 
using namespace std;
 
int n, xo, yo; 
string ck;
 
bool check(int x, int y){
    if(x < 1 || x > n || y < 1 || y > n) return false;
    cout << "examine " << x << ' ' << y << endl;
    cin >> ck;
    if(ck == "false") return false;
    return true;
}
 
int main(){
    cin >> n >> xo >> yo;
    int lx = xo, ly = yo, x = xo, y = yo;
    for(int i = 31; i >= 0; --i){
        x = lx - (1<<i), y = ly;
        if(check(x, y)) lx = x, ly = y;
    }
    for(int i = 31; i >= 0; --i){
        x = lx, y = ly - (1<<i);
        if(check(x, y)) lx = x, ly = y;
    }
    for(int i = 31; i >= 0; --i){
        x = lx - (1<<i), y = ly - (1<<i);
        if(check(x, y)) lx = x, ly = y;
    }
    int rx = lx, ry = ly;
    for(int i = 31; i >= 0; --i){
        int cx = rx + (1<<i);
        if(check(cx, ly)) rx = cx;
    }
    for(int i = 31; i >= 0; --i){
        int cy = ry + (1<<i);
        if(check(lx, cy)) ry = cy;
    }
    cout << "solution " << (lx + rx)/2 << ' ' << (ly + ry)/2 << endl;
}

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