#include <iostream>
#include <vector>
using namespace std;
int calc(vector<vector<char>>& v) {
int cnt = 0;
for (int i = 0; i < v.size(); i++) {
int c = 0;
for (int j = 0; j < v[i].size(); j++) {
if (v[i][j] == '+') c++;
}
if (c > v[i].size() / 2) cnt++;
}
for (int j = 0; j < v[0].size(); j++) {
int c = 0;
for (int i = 0; i < v.size(); i++) {
if (v[i][j] == '-') {
c++;
}
}
if (c > v.size() / 2) cnt++;
}
return cnt;
}
void malSol(int n, int m){
if (n + (m + 1) / 2 - 1 > m + (n + 1) / 2 - 1) {
cout << n + (m + 1) / 2 - 1 << endl;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
if (j <= m / 2 + 1) cout << '+';
else cout << '-';
}
cout << "\n";
}
}
else {
cout << m + (n + 1) / 2 - 1 << endl;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
if (i <= n / 2 + 1) cout << '-';
else cout << '+';
}
cout << "\n";
}
}
}
void solve() {
int n, m; cin >> n >> m;
if (min(m, n) <= 3 || (n <= 4 && m <= 4)) {
malSol(n, m);
return;
}
if (n % 2) {
if(max(n + (m + 1) / 2 - 1, m + (n + 1) / 2 - 1) > n + m - 2 - (1 - (m % 2))){
malSol(n, m);
return;
}
cout << n + m - 2 - (1 - (m % 2)) << endl;
}
else {
if(max(n + (m + 1) / 2 - 1, m + (n + 1) / 2 - 1) > m - 1 - (1 - (m % 2)) + n - 2 ){
malSol(n, m);
return;
}
cout << m - 1 - (1 - (m % 2)) + n - 2 << endl;
}
vector<vector<char>> vec(n);
for (int i = 0; i < m; i++) vec[0].push_back('-');
if(n % 2 == 0) for(int i = 0; i < m; i++) vec[1].push_back('-');
//cout << endl;
for (int i = 1 + (1 - (n % 2)); i < n; i++) {
if (i % 2) {
for (int j = 1; j <= m / 2 + 1; j++) vec[i].push_back('+');
for (int j = m / 2 + 2; j <= m; j++) vec[i].push_back('-');
}
else {
for (int j = m / 2 + 2; j <= m; j++) vec[i].push_back('-');
for (int j = 1; j <= m / 2 + 1; j++) vec[i].push_back('+');
}
//cout << endl;
}
//if ((n % 2 == 0 && calc(vec) != n - 1 + (m + 1) / 2 - 1) || (n % 2 && calc(vec) != n + m - 2 - (1 - (m % 2))))
{
//cout << calc(vec) << endl;
for (int i = 0; i < vec.size(); i++) {
for (int j = 0; j < vec[i].size(); j++) {
cout << vec[i][j];
}
cout << endl;
}
}
/*
----------------------------
+++++++++++++++-------------
-------------+++++++++++++++
+++++++++++++++-------------
-------------+++++++++++++++
*/
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(NULL), cout.tie(NULL);
int t; cin >> t; while (t--)
solve();
}
Compilation message
stones.cpp: In function 'int calc(std::vector<std::vector<char> >&)':
stones.cpp:8:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
8 | for (int i = 0; i < v.size(); i++) {
| ~~^~~~~~~~~~
stones.cpp:10:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
10 | for (int j = 0; j < v[i].size(); j++) {
| ~~^~~~~~~~~~~~~
stones.cpp:13:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
13 | if (c > v[i].size() / 2) cnt++;
| ~~^~~~~~~~~~~~~~~~~
stones.cpp:15:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
15 | for (int j = 0; j < v[0].size(); j++) {
| ~~^~~~~~~~~~~~~
stones.cpp:17:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
17 | for (int i = 0; i < v.size(); i++) {
| ~~^~~~~~~~~~
stones.cpp:22:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
22 | if (c > v.size() / 2) cnt++;
| ~~^~~~~~~~~~~~~~
stones.cpp: In function 'void solve()':
stones.cpp:88:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
88 | for (int i = 0; i < vec.size(); i++) {
| ~~^~~~~~~~~~~~
stones.cpp:89:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
89 | for (int j = 0; j < vec[i].size(); j++) {
| ~~^~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
2 ms |
212 KB |
Output is correct |
| 4 |
Incorrect |
5 ms |
372 KB |
Wrong answer in test 38 5: 40 < 41 |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
66 ms |
1324 KB |
Output is correct |
| 2 |
Correct |
25 ms |
1740 KB |
Output is correct |
| 3 |
Correct |
39 ms |
2072 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
42 ms |
1324 KB |
Wrong answer in test 6 6: 8 < 9 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
0 ms |
212 KB |
Output is correct |
| 3 |
Correct |
2 ms |
212 KB |
Output is correct |
| 4 |
Incorrect |
5 ms |
372 KB |
Wrong answer in test 38 5: 40 < 41 |
| 5 |
Halted |
0 ms |
0 KB |
- |
