이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
map<array<int,3>,int> was;
int n,m,k,q;
int Ask(int i,int j,int k){
if(was.count({i,j,k}))return was[{i,j,k}];
if(i<1||j<1||k<1||i>n||j>m||k>::k)return 0;
printf("? %i %i %i\n",i,j,k);
fflush(stdout);
int b;scanf("%i",&b);
was[{i,j,k}]=b;
return b;
}
void Ans(int i,int j,int k){
printf("! %i %i %i\n",i,j,k);
fflush(stdout);
exit(0);
}
bool Check(int i,int j,int k){
int now=Ask(i,j,k);
for(int a=-1;a<=1;a+=2)
if(now<max({Ask(i+a,j,k),Ask(i,j+a,k),Ask(i,j,k+a)}))
return 0;
Ans(i,j,k);
return 1;
}
mt19937 rng(time(0));
int main(){
scanf("%i %i %i %i",&n,&m,&k,&q);
if(m==1&&k==1){
int top=n,bot=1,mid,las=0;
while(top>bot){
mid=top+bot>>1;
if(las&&top-bot>1){
if(las>mid&&Ask(mid,1,1)<Ask(las,1,1)){bot=mid;continue;}
if(las<mid&&Ask(mid,1,1)<Ask(las,1,1)){top=mid;continue;}
}
if(Ask(mid,1,1)<Ask(mid+1,1,1))bot=mid+1,las=mid+1;
else top=mid,las=mid;
}
Ans(bot,1,1);
}else if(k==1){
int X1=1,X2=n,Y1=1,Y2=m,Xm=rng()%n+1,Ym;
while(X1<=X2&&Y1<=Y2){
int mx=0,pos=0;
for(int i=Y1;i<=Y2;i++){
int now=Ask(Xm,i,1);
if(now>mx)mx=now,pos=i;
}
if(Ask(Xm-1,pos,1)>mx){
X2=Xm-1;
}else if(Ask(Xm+1,pos,1)>mx){
X1=Xm+1;
}else Ans(Xm,pos,1);
Ym=pos;
mx=0,pos=0;
for(int i=X1;i<=X2;i++){
int now=Ask(i,Ym,1);
if(now>mx)mx=now,pos=i;
}
if(Ask(pos,Ym-1,1)>mx){
Y2=Ym-1;
}else if(Ask(pos,Ym+1,1)>mx){
Y1=Ym+1;
}else Ans(pos,Ym,1);
Xm=pos;
}
}else{
int X,Y,Z,mx=0;
for(int i=1;i<=q/2;i++){
int x=rng()%n+1;
int y=rng()%m+1;
int z=rng()%k+1;
if(Ask(x,y,z)>mx){
mx=Ask(x,y,z);
X=x;
Y=y;
Z=z;
}
}
while(!Check(X,Y,Z)){
if(Ask(X+1,Y,Z)>Ask(X,Y,Z))X++;
else if(Ask(X-1,Y,Z)>Ask(X,Y,Z))X--;
else if(Ask(X,Y+1,Z)>Ask(X,Y,Z))Y++;
else if(Ask(X,Y-1,Z)>Ask(X,Y,Z))Y--;
else if(Ask(X,Y,Z+1)>Ask(X,Y,Z))Z++;
else if(Ask(X,Y,Z-1)>Ask(X,Y,Z))Z--;
}
}
return 0;
}
컴파일 시 표준 에러 (stderr) 메시지
worm.cpp: In function 'int main()':
worm.cpp:33:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
33 | mid=top+bot>>1;
| ~~~^~~~
worm.cpp: In function 'int Ask(int, int, int)':
worm.cpp:10:13: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
10 | int b;scanf("%i",&b);
| ~~~~~^~~~~~~~~
worm.cpp: In function 'int main()':
worm.cpp:29:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
29 | scanf("%i %i %i %i",&n,&m,&k,&q);
| ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
worm.cpp:87:28: warning: 'Z' may be used uninitialized in this function [-Wmaybe-uninitialized]
87 | else if(Ask(X,Y,Z-1)>Ask(X,Y,Z))Z--;
| ~~~^~~~~~~
worm.cpp:87:28: warning: 'Y' may be used uninitialized in this function [-Wmaybe-uninitialized]
worm.cpp:87:28: warning: 'X' may be used uninitialized in this function [-Wmaybe-uninitialized]
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