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lighthouses.cpp
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lighthouses.cpp
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#include <iostream>
using namespace std;
int main(){
int a;
cin >> a;
while(a--){
long b;
long long c,d,topr[3],bottomr[3],topl[3],bottoml[3],right[3],left[3];
cin >> b;
cin >> c >> d;
right[0]=left[0]=topr[1]=bottomr[1]=topl[1]=bottoml[1]=c;
topr[0]=bottomr[0]=topl[0]=bottoml[0]=right[1]=left[1]=d;
right[2]=left[2]=topr[2]=bottomr[2]=topl[2]=bottoml[2]=1;
for(int i=2;i<b+1;i++){
cin >> c >> d;
if (c<left[0]){
left[0]=c;
left[1]=d;
left[2]=i;
}
else if(c>right[0]){
right[0]=c;
right[1]=d;
right[2]=i;
}
if (d<bottomr[0]){
bottoml[0]=bottomr[0]=d;
bottoml[1]=bottomr[1]=c;
bottoml[2]=bottomr[2]=i;
}
else if(d==bottomr[0] || d==topr[0]){
if (d==bottomr[0]){
if(c<bottoml[1]){
bottoml[1]=c;
bottoml[2]=i;
}
else if (c>bottomr[1]){
bottomr[1]=c;
bottomr[2]=i;
}
}
if(d==topl[0]){
if(c<topl[1]){
topl[1]=c;
topl[2]=i;
}
else if (c>topr[1]){
topr[1]=c;
topr[2]=i;
}
}
}
else if(d>topr[0]){
topl[0]=topr[0]=d;
topl[1]=topr[1]=c;
topl[2]=topr[2]=i;
}
}
if(left[0]==bottoml[1] || left[1]==bottoml[0])
cout << 1 << endl << bottoml[2] << " NE" << endl;
else if(left[0]==topl[1] || left[1]==topl[0])
cout << 1 << endl << topl[2] << " SE" << endl;
else if(right[0]==bottomr[1] || right[1]==bottomr[0])
cout << 1 << endl << bottomr[2] << " NW" << endl;
else if(right[0]==topr[1] || right[1]==topr[0])
cout << 1 << endl << topr[2] << " SW" << endl;
else if(bottomr[1]<topr[1])
cout << 2 << endl << bottomr[2] << " NE" << endl << topr[2] << " SW" << endl;
else
cout << 2 << endl << bottomr[2] << " NW" << endl << topr[2] << " SE" << endl;
}
}