이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
/*
IN THE NAME OF GOD
*/
#include <bits/stdc++.h>
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef long double ld;
#define F first
#define S second
#define Mp make_pair
#define pb push_back
#define pf push_front
#define size(x) ((ll)x.size())
#define all(x) (x).begin(),(x).end()
#define kill(x) cout << x << '\n', exit(0);
#define fuck(x) cout << "(" << #x << " , " << x << ")" << endl
#define endl '\n'
const int N = 1e6+23, lg = 21;
ll Mod = 998244353;
inline ll MOD(ll a, ll mod=Mod) {a%=mod; (a<0)&&(a+=mod); return a;}
inline ll poww(ll a, ll b, ll mod=Mod) {
ll ans = 1;
a=MOD(a, mod);
while (b) {
if (b & 1) ans = MOD(ans*a, mod);
b >>= 1;
a = MOD(a*a, mod);
}
return ans;
}
int t, n, m, a[1005][1005];
int main () {
ios_base::sync_with_stdio(false), cin.tie(0);
cin>>t;
while(t--) {
cin>>n>>m;
int cnt=0, x=0, ans=0, nm=0;
if(n < m) {
swap(n,m);nm=1;
}
for(int i=0; i<n; i++) fill(a[i], a[i]+m, 1);
ans = n;
for(int i=0; i<(m-1)/2; i++) {
for(int j=0; j<n; j++) {
a[j][x] = -1;
cnt++;
if(cnt > n/2+1) {
x++;
cnt=0; ans++;
}
}
}
cout<<ans<<endl;
if(nm == 0) {
for(int i=0; i<n; i++) {
for(int j=0; j<m; j++) {
cout<<(a[i][j]<0 ? '-' : '+');
}
cout<<endl;
}
} else {
for(int i=0; i<m; i++) {
for(int j=0; j<n; j++) {
cout<<(a[j][i]<0 ? '-' : '+');
}
cout<<endl;
}
}
}
return 0;
}
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