/*Bismillahir Rahmanir Raheem*/
#include <bits/stdc++.h>
using namespace std;
#define kuka ios::sync_with_stdio(false);cin.tie(0), cout.tie(0);
#define pb push_back
#define sz(x) x.size()
#define all(x) x.begin(), x.end()
#define FOR(n) for(int i = 0; i < n; i++)
#define ff(x, y) for( int y = 0; y < x; y++)
#define fff(x, y) for( int y = x; y <= 0; y--)
#define F first
#define S second
#define int long long
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const ll INF = LLONG_MAX;
const int inf = INT_MAX;
const double PI = acos(-1);
const int N = 1002;
const int MOD = 1e9 ;
char a[N][N];
int col[N];
void oyan(){
int n, m, ans = 0;
cin >> n >> m;
if (n > m) {
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
a[i][j] = '+';
}
col[i] = (m - 1) / 2;
}
ans = n;
for (int j = 1; j <= m; ++j) {
int cnt = 0;
if (j % 2 == 0) {
for (int i = 1; i <= n; ++i) {
if (cnt > n / 2) {
ans++;cnt = 0;
break;
}
if (col[i] != 0) {
col[i]--;
a[i][j] = '-';
cnt++;
}
}
} else {
for (int i = n; i >= 1; --i) {
if (cnt > n / 2) {
ans++;cnt = 0;
break;
}
if (col[i] != 0) {
col[i]--;
a[i][j] = '-';
cnt++;
}
}
}
if (cnt > n / 2) {
ans++;
}
}
} else if(n < m){
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
a[i][j] = '-';
col[j] = (n - 1) / 2;
}
}
ans = m;
for (int j = 1; j <= n; ++j) {
int cnt = 0;
if (j % 2 == 0) {
for (int i = 1; i <= m; ++i) {
if (cnt > m / 2) {
ans++;cnt = 0;
break;
}
if (col[i] != 0) {
col[i]--;
a[j][i] = '+';
cnt++;
}
}
} else {
for (int i = m; i >= 1; --i) {
if (cnt > m / 2) {
ans++;cnt = 0;
break;
}
if (col[i] != 0) {
col[i]--;
a[j][i] = '+';
cnt++;
}
}
}
if (cnt > m / 2) {
ans++;
}
}
}else{
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
a[i][j] = '-';
col[j] = (n - 1) / 2;
}
}
if (j % 2 == 0) {
for (int i = 1; i <= m; ++i) {
if (cnt > m / 2) {
ans++;cnt = 0;
break;
}
if (col[i] != 0) {
col[i]--;
a[j][i] = '+';
cnt++;
}
}
} else {
for (int i = m; i >= 1; --i) {
if (cnt > m / 2) {
ans++;cnt = 0;
break;
}
if (col[i] != 0) {
col[i]--;
a[j][i] = '+';
cnt++;
}
}
}
if (cnt > m / 2) {
ans++;
}
}
cout << ans << "\n";
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
cout << a[i][j];
}
cout << "\n";
}
}
main(){
//kuka;
//freopen("test.txt", "r", stdin);
//freopen("distance.in", "r", stdin);
//freopen("distance.out", "w", stdout);
int oylan = 1;
cin>>oylan;
while(oylan--){
oyan();
}
}
/*
NOTES
a/b module == (a*b^(module - 2)) % (module);
*/
Compilation message
stones.cpp: In function 'void oyan()':
stones.cpp:120:13: error: 'j' was not declared in this scope
120 | if (j % 2 == 0) {
| ^
stones.cpp:122:14: error: 'cnt' was not declared in this scope; did you mean 'int'?
122 | if (cnt > m / 2) {
| ^~~
| int
stones.cpp:129:18: error: 'cnt' was not declared in this scope; did you mean 'int'?
129 | cnt++;
| ^~~
| int
stones.cpp:134:18: error: 'cnt' was not declared in this scope; did you mean 'int'?
134 | if (cnt > m / 2) {
| ^~~
| int
stones.cpp:141:18: error: 'cnt' was not declared in this scope; did you mean 'int'?
141 | cnt++;
| ^~~
| int
stones.cpp:145:10: error: 'cnt' was not declared in this scope; did you mean 'int'?
145 | if (cnt > m / 2) {
| ^~~
| int
stones.cpp: At global scope:
stones.cpp:159:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
159 | main(){
| ^~~~
