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OI-codes/S2OJ/1556/1556.cpp

58 lines
1.3 KiB
C++

#include <iostream>
#include <algorithm>
#include <vector>
using std::cin;
using std::cout;
const char endl = '\n';
int main() {
std::ios::sync_with_stdio(false);
cin.tie(nullptr);
int t;
cin >> t;
while (t--) {
int a, b, c, d;
std::vector<std::pair<char, int>> ans;
cin >> a >> b >> c >> d;
if ((a == 0 && b == -1) || (c == 0 && d == -1)) {
ans.emplace_back('B', 1);
std::swap(a, b), std::swap(c, d);
a = -a, c = -c;
} else if ((a == -1 && b == 0) || (c == -1 && d == 0)) {
ans.emplace_back('B', -1);
std::swap(a, b), std::swap(c, d);
b = -b, d = -d;
}
if (a == 0 && b == 1) {
if (d) ans.emplace_back('A', d);
ans.emplace_back('B', -1);
} else if (b == 0 && a == 1) {
ans.emplace_back('B', 1);
if (c) ans.emplace_back('A', c);
ans.emplace_back('B', -1);
} else if (c == 0 && d == 1) {
ans.emplace_back('A', -b);
} else {
ans.emplace_back('B', 1);
if (a) ans.emplace_back('A', -a);
}
std::reverse(ans.begin(), ans.end());
cout << ans.size() << endl;
for (auto o : ans) {
cout << o.first << ' ' << -o.second << endl;
}
}
return 0;
}