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;
const int mx=1005;
typedef long long ll;
int inf=1e9+10;
const int mod=1e9+7;
ll n,m,k;
vector<pair<int,int>>v;
bool vis[mx];
ll ans=0;
char arr[mx][mx];
int main(){
int t;cin>>t;
while(t--){
cin>>n>>m;
int x=(m/2);x++;
int z1=n+(m-x);
int xx=n/2;xx++;
int z2=m+(n-xx);
int ans;
if(z1>z2){
int z=(m/2);z++;
ans=n+(m-z);
for(int i=0;i<n;i++){
for(int j=0;j<z;j++){
arr[i][j]='+';
}
for(int j=z;j<m;j++){
arr[i][j]='-';
}
}
} else{
int z=(n/2);z++;
ans=m+(n-z);
for(int i=0;i<m;i++){
for(int j=0;j<z;j++){
arr[j][i]='-';
}
for(int j=z;j<m;j++){
arr[j][i]='+';
}
}
}cout<<ans<<"\n";
for(int i=0;i<n;i++){
for(int j=0;j<m;j++){
cout<<arr[i][j];
}cout<<endl;
}
}
}
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