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;
vector <vector <char>> a;
int main(){
ios::sync_with_stdio(false); cin.tie(nullptr);
int T;
cin >> T;
while(T--){
int n, m;
cin >> n >> m;
a.assign(n, vector <char> (m,'+'));
if(n+(((m+1)/2)-1) <= m+(n-(n/2)+1)){
int n1 = (n/2)+1;
for(int j = 0; j < m; j++){
for(int i = 0; i < n1; i++){
a[i][j] = '-';
}
}
}
else {
int m1 = ((m+1)/2)-1;
for(int i = 0; i < n; i++){
for(int j = 0; j < m1; j++){
a[i][j] = '-';
}
}
}
int ans = 0;
for(int i = 0; i < n; i++){
int a1 = 0, b1 = 0;
for(int j = 0; j < m; j++){
if(a[i][j] == '+') a1++;
else b1++;
}
ans += (a1 > b1);
}
for(int j = 0; j < m; j++){
int a1 = 0, b1 = 0;
for(int i = 0; i < n; i++){
if(a[i][j] == '+') a1++;
else b1++;
}
ans += (b1 > a1);
}
cout << ans << '\n';
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
cout << a[i][j];
}
cout << '\n';
}
}
}
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