#include<bits/stdc++.h>
using namespace std;
#define int long long
//#define endl '\n'
#define all(v) v.begin(),v.end()
bool testcases=1;
int a,b;
int calc(vector<vector<char>>& v) { // c1 red c2 blue
int A=0,B=0;
for (int i=0;i<a;i++) {
int c1=0,c2=0;
for (int u=0;u<b;u++) {
if (v[i][u]=='+')c1++;
else c2++;
}
if (c1>c2)B++;
}
for (int u=0;u<b;u++) {
int c1=0,c2=0;
for (int i=0;i<a;i++) {
if (v[i][u]=='+')c1++;
else c2++;
}
if (c2>c1)A++;
}
return A+B;
}
void solve(){
cin>>a>>b;
int n=a*b;
int mx=-1;
vector<vector<char>> ans;
for (int mask=0;mask<(1<<n);mask++) {
vector<vector<char>> temp(a,vector<char>(b));
for (int i=0;i<n;i++) {
temp[i/b][i%b]=(mask>>i)&1?'+':'-';
}
int tempmx=calc(temp);
if (tempmx>mx) {
mx=tempmx;
ans=temp;
}
}
cout<<mx<<endl;
for (auto v:ans) {
for (char c:v) {
cout<<c;
}
cout<<endl;
}
}
signed main() {
iostream::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int t=1;
if (testcases)cin>>t;
for(int i=1;i<=t;i++){
solve();
}
}
