#include<bits/stdc++.h>
using namespace std;
#define int long long
//#define endl '\n'
#define all(v) v.begin(),v.end()
bool testcases=1;
void solve() {
int n,m;
cin>>n>>m;
bool flag=0;
if (n>m){swap(n,m);flag=1;}
vector<vector<char>> ans(n+1,vector<char>(m+1,'-'));
if (n<3)goto afterloop;
for (int i=1;i<=(n-1)/2;i++) {
for (int j=1;j<=(m)/2+1;j++) {
ans[i][j]='+';
}
}
afterloop:
function<int(vector<vector<char>>&)> calc=[&](vector<vector<char>>& v) { // c1 red c2 blue
int A=0,B=0;
int a=n,b=m;
for (int i=1;i<=a;i++) {
int c1=0,c2=0;
for (int u=1;u<=b;u++) {
if (v[i][u]=='+')c1++;
else c2++;
}
if ((c1>c2))B++;
}
for (int u=1;u<=b;u++) {
int c1=0,c2=0;
for (int i=1;i<=a;i++) {
if (v[i][u]=='+')c1++;
else c2++;
}
if (c2>c1)A++;
}
return A+B;
};
cout<<calc(ans)<<endl;
if (flag) {
for (int j=1;j<=m;j++) {
for (int i=1;i<=n;i++) {
cout<<(ans[i][j]=='+'?'-':'+');
}
cout<<endl;
}
return;
}
for (int i=1;i<=n;i++) {
for (int j=1;j<=m;j++) {
cout<<ans[i][j];
}
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();
}
}
