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