//#include "alienslib.cpp"
#include <bits/stdc++.h>
//#include "alienslib.h"
using namespace std;
long long n,x,y,ox,oy,l,r,up,lo,sz;
bool check(long long x,long long y)
{
if(x<1 or x>n or y<1 or y>n) return false;
// return examine((int)x,(int)y);
cout << "examine " << (int)x << ' ' << (int)y; cout << flush;
string s; cin >> s;
return s=="true";
}
int main()
{
// ios_base::sync_with_stdio(0); cin.tie(0);
cin >> n >> x >> y;
//
int a,b,c;
//get_size_and_start(a,b,c);
n = a,x = b,y = c;
//cout << check(x,y) << endl;
// return 0;
ox = x,oy = y;
l = x,r = n;
// return 0;
for(long long i = 1LL;x+i <= n;i*=2LL)
{
if(!check(x+i,y)){ r = x+i; break; }
else if(!check(x+i+1LL,y)){ r = x+i+1LL; break; }
else l = x+i;
x+=i;
}
//return 0;
while(l<r)
{
long long m = (l+r)/2LL;
if(check(m,y))
{
if(!check(m+1LL,y)){ l = m; break; }
else l = m+1LL;
}
else r = m;
}
//return 0;
// return 0;
//cout << "still ok";
//cout.flush();
//cout << l;
up = l;
x = ox,y = oy;
l = 1LL,r = x;
for(long long i = 1LL;x-i >= 1LL;i*=2LL)
{
// cout << x << ' ' << x-i << endl;
if(!check(x-i,y)){ l = x-i; break; }
else if(!check(x-i-1LL,y)){ l = x-i-1LL; break; }
else r = x-i;
x-=i;
}
while(l<r)
{
long long m = (l+r)/2LL;
// cout << l << ' ' << m << ' ' << r << endl;
// cout << check(m,y) << endl;
if(check(m,y))
{
if(!check(m-1LL,y)){ l = m; break; }
else r = m;
}
else l = m+1LL;
}
// cout << r << endl;
// cout << lo << ' ' << up << ' ' << sz << endl;
lo = l,sz = up-lo+1LL;
// cout << lo << ' ' << up << ' ' << sz << endl;
x = ox,y = oy;
while(check(x-sz,y-sz)) x-=sz,y-=sz;
while(check(x-sz*2LL,y)) x-=sz*2LL;
while(check(x,y-sz*2LL)) y-=sz*2LL;
l = x-sz,r = x;
while(l<r)
{
long long m = (l+r)/2LL;
if(check(m,y))
{
if(!check(m-1LL,y)){ l = m; break; }
else r = m;
}
else l = m+1LL;
}
//return 0;
x = l;
l = y-sz,r = y;
while(l<r)
{
long long m = (l+r)/2LL;
if(check(x,m))
{
if(!check(x,m-1LL)){ l = m; break; }
else r = m;
}
else l = m+1LL;
}
y = l;
cout << (int)(x+sz*2+sz/2) << ' ' << (int)(y+sz*2+sz/2) << endl;
//cout << flush;
// solution(x+sz*2+sz/2,y+sz*2+sz/2);
}
Compilation message
aliens.cpp: In function 'int main()':
aliens.cpp:25:12: warning: 'a' is used uninitialized in this function [-Wuninitialized]
n = a,x = b,y = c;
~~~~~~~~~~~^~~~~~
aliens.cpp:25:12: warning: 'b' is used uninitialized in this function [-Wuninitialized]
aliens.cpp:25:12: warning: 'c' is used uninitialized in this function [-Wuninitialized]
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
248 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
296 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
376 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
376 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
376 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
248 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
280 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
376 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
248 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
248 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
