#include <bits/stdc++.h>
using namespace std;
#define debug(a) cout << #a << " = " << a << endl;
#define int long long
bool check(int x,int y);
bool check(int x,int y)
{
printf("examine %lld %lld\n",x,y);
fflush(stdout);
char s[100];
scanf("%s",s);
if(!strcmp(s,"true"))return true;
return false;
}
int32_t main()
{
int n,m;
scanf("%lld %lld ",&n,&m);
int x,y;
scanf("%lld %lld",&x,&y);
int lo = y,hi = y+m;
int dan = -1,bam=-1,upore=-1,niche=-1;
while(hi-lo > 2){
int mid=(lo+hi)/2;
if(check(x,mid)){
dan = max(dan,mid);
lo = mid+1;
}
else hi = mid-1;
}
for(int mid = lo;mid <= hi;mid++){
if(check(x,mid)){
dan = max(dan,mid);
}
}
if(dan+m*4 <= n and check(x,dan+m*4)){
dan = dan+m*4;
}
else if(dan + m* 2 <= n and check(x,dan+m*2))dan = dan+m*2;
lo = max(1ll,y-m);
hi = y;
bam = y;
while(hi-lo > 2){
int mid=(lo+hi)/2;
if(check(x,mid)){
bam = min(bam,mid);
hi = mid-1;
}
else lo = mid+1;
}
for(int mid = lo;mid <= hi;mid++){
if(check(x,mid)){
bam = min(bam,mid);
}
}
if(bam-m*4 > 0 and check(x,bam-m*4)){
bam -= m*4;
}
else if(bam-m*2 > 0 and check(x,bam-m*2)){
bam -= m*2;
}
hi = x;
lo = max(1ll,x-m);
upore = x;
while(hi-lo > 2){
int mid=(lo+hi)/2;
if(check(mid,y)){
upore = min(upore,mid);
hi = mid-1;
}
else lo = mid+1;
}
for(int mid = lo;mid <= hi;mid++){
if(check(mid,y)){
upore = min(upore,mid);
}
}
if(upore-m*4 > 0 and check(upore-m*4,y)){
upore -= m*4;
}
else if(upore-m*2 > 0 and check(upore-m*2,y)){
upore -= m*2;
}
niche = x;
lo = x;
hi = x+m;
while(hi-lo > 2){
int mid=(lo+hi)/2;
if(check(mid,y)){
niche = max(niche,mid);
lo = mid+1;
}
else hi = mid-1;
}
for(int mid = lo;mid <= hi;mid++){
if(check(mid,y)){
niche = max(niche,mid);
}
}
if(niche+m*4 <= n and check(niche+m*4,y)){
niche = niche+m*4;
}
else if(niche + m* 2 <= n and check(niche+m*2,y))niche = niche+m*2;
x = (niche-upore)/2 + m;
y = (dan-bam)/2 + m;
printf("%lld %lld\n",x,y);
return 0;
}
Compilation message
aliens.cpp: In function 'bool check(long long int, long long int)':
aliens.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%s",s);
~~~~~^~~~~~~~
aliens.cpp: In function 'int32_t main()':
aliens.cpp:23:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld %lld ",&n,&m);
~~~~~^~~~~~~~~~~~~~~~~~~~
aliens.cpp:25:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld %lld",&x,&y);
~~~~~^~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
2 ms |
248 KB |
Time limit exceeded (wall clock) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
2 ms |
332 KB |
Time limit exceeded (wall clock) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
2 ms |
372 KB |
Time limit exceeded (wall clock) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1 ms |
372 KB |
Time limit exceeded (wall clock) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
2 ms |
372 KB |
Time limit exceeded (wall clock) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
2 ms |
372 KB |
Time limit exceeded (wall clock) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
2 ms |
452 KB |
Time limit exceeded (wall clock) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
2 ms |
452 KB |
Time limit exceeded (wall clock) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
2 ms |
452 KB |
Time limit exceeded (wall clock) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1 ms |
452 KB |
Time limit exceeded (wall clock) |
| 2 |
Halted |
0 ms |
0 KB |
- |
