QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#73752 | #4884. Battleship: New Rules | Appleblue17 | WA | 2ms | 3308kb | C++14 | 728b | 2023-01-27 21:34:02 | 2023-01-27 21:34:03 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=1100;
int T,n;
void solve(int l,int r,int L,int R,bool typ){
if(l==r && L==R){
if(typ) swap(l,L);
cout<<"! "<<l-1<<" "<<L-1<<'\n';
return ;
}
if(R-L<r-l){
solve(L,R,l,r,typ^1);
return ;
}
int MID=(L+R)>>1;
int tot=0,lst=0;
for(int i=l;i<r;i++){
if(!typ) cout<<"? "<<i<<" "<<MID<<'\n';
else cout<<"? "<<MID<<" "<<i<<'\n';
int s; cin>>s;
if(s || lst) tot++;
lst=s;
}
if(lst) tot++;
if(((r-l+1)*(MID-L+1)%2)^(tot%2)) solve(l,r,L,MID,typ);
else solve(l,r,MID+1,R,typ);
}
int main(){
cin>>T;
while(T--){
cin>>n;
if(n & 1){
puts("! -1 -1");
continue;
}
solve(1,n+1,1,n+1,0);
}
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 0
Wrong Answer
time: 2ms
memory: 3308kb
input:
2 3 1 4 -1
output:
! -1 -1 ! -1 -1
result:
wrong output format Unexpected end of file - int32 expected (test case 2)