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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#388878 | #4884. Battleship: New Rules | unputdownable | TL | 0ms | 3744kb | C++17 | 2.9kb | 2024-04-13 21:04:02 | 2024-04-13 21:04:03 |
Judging History
answer
#include <bits/stdc++.h>
// #define int long long
#define i64 long long
#define pii pair <int, int>
using namespace std;
const pii O=make_pair(0,0);
int n,N;
inline void Answer(int x,int y) {
cout<<"! "<<x<<' '<<y<<endl;
int res; cin>>res;
if(res==-1) exit(0);
}
inline int qry(int x,int y) {
cout<<"? "<<x<<' '<<y<<endl;
int res; cin>>res;
if(res==-1) exit(0);
return res;
}
pii nxt[502][502];
inline pii Q(int x,int y) {
int A=qry(x*2,y*2),B=qry(x*2,y*2+1);
int C=qry(x*2+1,y*2),D=qry(x*2+1,y*2+1);
if(!A&&!B&&!C&&!D) return O;
if(A&&B) return make_pair(-1,0);
if(A&&C) return make_pair(0,-1);
if(D&&B) return make_pair(0,1);
if(D&&C) return make_pair(1,0);
if(A) return make_pair(-1,-1);
if(B) return make_pair(-1,1);
if(C) return make_pair(1,-1);
if(D) return make_pair(1,1);
}
inline void work() {
cin>>N;
if(N&1) return Answer(-1,-1);
n=N/2-1;
for(int i=1; i<=n; ++i)
for(int u=1; u<=n; ++u)
nxt[i][u]=O;
int cx=(n+1)/2,cy=(n+1)/2;
auto f=[&](int&x,int&y,pii d) {
x+=d.first; y+=d.second;
if(x<1) x=1;
if(x>n) x=n;
if(y<1) y=1;
if(y>n) y=n;
};
while(1) {
if(nxt[cx][cy]!=O) {
int sumx=cx,sumy=cy,cnt=1,px=cx,py=cy;
f(px,py,nxt[cx][cy]);
while(px!=cx||py!=cy) {
sumx+=px;
sumy+=py;
++cnt;
f(px,py,nxt[px][py]);
}
cx=floor(1.0*sumx/cnt+0.5);
cy=floor(1.0*sumy/cnt+0.5);
if(nxt[cx][cy]!=O) {
for(int dx=cx-1; dx<=cx+1; ++dx) {
for(int dy=cy-1; dy<=cy+1; ++dy) if(nxt[dx][dy]==O) {
if(dx<1) continue;
if(dx>n) continue;
if(dy<1) continue;
if(dy>n) continue;
cx=dx; cy=dy;
goto eee;
}
}
for(int dx=cx-2; dx<=cx+2; ++dx) {
for(int dy=cy-2; dy<=cy+2; ++dy) if(nxt[dx][dy]==O) {
if(dx<1) continue;
if(dx>n) continue;
if(dy<1) continue;
if(dy>n) continue;
cx=dx; cy=dy;
goto eee;
}
}
}
eee:;
}
if((nxt[cx][cy]=Q(cx,cy))==O) return Answer(cx*2,cy*2);
f(cx,cy,nxt[cx][cy]);
}
}
signed main() {
// freopen("localinput","r",stdin);
// freopen("localoutput","w",stdout);
ios::sync_with_stdio(0);
int T; cin>>T;
while(T--) work();
// fprintf(stderr,"%.4lf\n",1.0*clock()/CLOCKS_PER_SEC);
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 3684kb
input:
2 3 1 4 0 0 0 0 1
output:
! -1 -1 ? 2 2 ? 2 3 ? 3 2 ? 3 3 ! 2 2
result:
ok max_C=1.00, avg_C=0.50 (2 test cases)
Test #2:
score: 0
Accepted
time: 0ms
memory: 3744kb
input:
100 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 0 1 4 0 0 0 ...
output:
? 2 2 ? 2 3 ? 3 2 ? 3 3 ! 2 2 ? 2 2 ? 2 3 ? 3 2 ? 3 3 ! 2 2 ? 2 2 ? 2 3 ? 3 2 ? 3 3 ! 2 2 ? 2 2 ? 2 3 ? 3 2 ? 3 3 ! 2 2 ? 2 2 ? 2 3 ? 3 2 ? 3 3 ! 2 2 ? 2 2 ? 2 3 ? 3 2 ? 3 3 ! 2 2 ? 2 2 ? 2 3 ? 3 2 ? 3 3 ! 2 2 ? 2 2 ? 2 3 ? 3 2 ? 3 3 ! 2 2 ? 2 2 ? 2 3 ? 3 2 ? 3 3 ! 2 2 ? 2 2 ? 2 3 ? 3 2 ? 3 3 ! 2 2 ...
result:
ok max_C=1.00, avg_C=1.00 (100 test cases)
Test #3:
score: -100
Time Limit Exceeded
input:
100 10 0 0 1 0 1 0 0 0 0 0 0 0 1 10 0 0 1 1 0 0 0 1 0 0 0 0 1 10 0 0 0 1 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 0 1
output:
? 4 4 ? 4 5 ? 5 4 ? 5 5 ? 6 2 ? 6 3 ? 7 2 ? 7 3 ? 4 2 ? 4 3 ? 5 2 ? 5 3 ! 4 2 ? 4 4 ? 4 5 ? 5 4 ? 5 5 ? 6 4 ? 6 5 ? 7 4 ? 7 5 ? 8 6 ? 8 7 ? 9 6 ? 9 7 ! 8 6 ? 4 4 ? 4 5 ? 5 4 ? 5 5 ? 6 6 ? 6 7 ? 7 6 ? 7 7 ? 8 4 ? 8 5 ? 9 4 ? 9 5 ? 6 2 ? 6 3 ? 7 2 ? 7 3 ? 4 2 ? 4 3 ? 5 2 ? 5 3 ? 2 4 ? 2 5 ? 3 4 ? 3 5 ...