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>
#define MOD 1000000007
#define INF 100000000000000000
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define pp push
typedef long long ll;
using namespace std;
char ans[1001][1001];
int main(){
ios_base::sync_with_stdio(NULL);
cin.tie(NULL);
cout.tie(NULL);
int test;
cin >> test;
while(test--){
int n,m;
cin >> n >> m;
for(int i=0;i<n;i++){
for(int j=0;j<m;j++)
ans[i][j]='+';
}
int k=max(n,m)+(min(n,m)-((min(n,m)/2)+1))*max(n,m)/(max(n,m)/2+1);
cout << k << '\n';
if(n>m){
for(int i=m+n-k;i<m;i++){
for(int j=0;j<=(n/2);j++){
ans[(j+i*(n/2+1))%n][i]='-';
}
}
}
else{
for(int i=0;i<n;i++){
for(int j=0;j<m;j++){
ans[i][j]='-';
}
}
for(int i=m+n-k;i<n;i++){
for(int j=0;j<=(m/2);j++){
ans[i][(j+i*(m/2+1))%m]='+';
}
}
}
for(int i=0;i<n;i++){
for(int j=0;j<m;j++){
cout << ans[i][j];
}
cout << '\n';
}
}
}
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