#include <iostream> #include <algorithm> using namespace std; int main() { int n; cin>>n; int k,l; int a[n*2+5]; for(int i=1;i<=n;i++){ cin>>a[2*i-1]; cin>>a[2*i]; } for(int i=1;i<=n;i++){ k=min(a[2*i],a[2*i-1]); l=max(a[2*i],a[2*i-1]); k=k-1; k=k/2; l=k+l; cout<<l<<"\n"; if(a[2*i]<=a[2*i-1]){ for(int j=1;j<=a[2*i-1];j++){ for(int h=1;h<=k;h++){ cout<<"-"; } for(int r=1;r<=a[2*i]-k;r++){ cout<<"+"; } cout<<"\n"; } } else{ for(int d=1;d<=k;d++){ for(int g=1;g<=a[2*i];g++){ cout<<"+"; } cout<<"\n"; } for(int e=1;e<=a[2*i-1]-k;e++){ for(int t=1;t<=a[2*i];t++){ cout<<"-"; } cout<<"\n"; } } } }