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>
using namespace std;
void solve(){
int n, m;
cin >> n >> m;
if(n >= 3 && m >= 3){
if(n < m){
int s = m;
char a[100][100];
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
a[i][j] = '-';
}
}
if(n % 2 && m % 2){
s += n / 2;
for(int i = 0; i < n / 2; i++){
for(int j = 0; j < m / 2 + 1; j++){
a[i][j] = '+';
}
}
}else if(n % 2 && m % 2 == 0){
s += n / 2 + 1;
for(int i = 0; i < n / 2; i++){
for(int j = 0; j < m / 2 + 1; j++){
a[i][j] = '+';
}
}
}else if(n % 2 == 0 && m % 2){
s += n / 2 - 1;
for(int i = 0; i < n / 2 - 1; i++){
for(int j = 0; j < m / 2 + 1; j++){
a[i][j] = '+';
}
}
} else{
s += n / 2;
for(int i = 0; i < n / 2; i++){
for(int j = 0; j < m / 2 + 1; j++){
a[i][j] = '+';
}
}
}
cout << s << '\n';
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
cout << a[i][j];
}
cout << '\n';
}
}
else{
int s = n;
char a[100][100];
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
a[i][j] = '+';
}
}
if(n % 2 && m % 2){
s += m / 2;
for(int i = 0; i < n / 2 + 1; i++){
for(int j = 0; j <= m / 2 - 1; j++){
a[i][j] = '-';
}
}
}else if(n % 2 && m % 2 == 0){
s += m / 2 - 1;
for(int i = 0; i < n / 2 + 1; i++){
for(int j = 0; j < m / 2 - 1; j++){
a[i][j] = '-';
}
}
}else if(n % 2 == 0 && m % 2){
s += m / 2;
for(int i = 0; i < n / 2 + 1; i++){
for(int j = 0; j < m / 2; j++){
a[i][j] = '-';
}
}
} else{
s += n / 2 - 1;
for(int i = 0; i < n / 2 + 1; i++){
for(int j = 0; j < m / 2 - 1; j++){
a[i][j] = '-';
}
}
}
cout << s << '\n';
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
cout << a[i][j];
}
cout << '\n';
}
}
} else{
if(n < m){
cout << m << '\n';
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
cout << '-';
}
cout << '\n';
}
} else{
cout << n << '\n';
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
cout << '+';
}
cout << '\n';
}
}
}
}
int main(){
int t;
cin >> t;
while(t--)
solve();
}
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