This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
void solve(){
int n, m;
cin >> n >> m;
bool swaped=false;
if(n<m){
int temp = n;
n=m;
m=temp;
swaped=true;
}
char a[n][m];
for(int i=0; i<n; i++){
for(int j=0; j<m; j++){
a[i][j]='+';
}
}
int x = 0, ans=n, y=0;
for(int i=0; i<(m-1)/2; i++){
for(int j=0; j<n; j++){
a[j][y]='-';
x++;
if(x==(n/2)+1){
ans++;
y++;
x=0;
}
}
}
cout << ans << "\n";
if(!swaped){
for(int i=0; i<n; i++){
for(int j=0; j<m; j++){
cout << a[i][j];
}
cout << "\n";
}
}
else{
for(int i=0; i<m; i++){
for(int j=0; j<n; j++){
if(a[j][i]=='+'){
cout << '-';
}
else{
cout << '+';
}
}
cout << "\n";
}
}
}
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
int t;
cin >> t;
while(t--){
solve();
}
return 0;
}
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