- Huge Boxes of Animal Toys
- ICPC Indonesia COMPFEST 12 Multi-Provincial Contest Online Mirror Editorial
每次操作都是乘法,所以最终的结果的符号可以确定,并且和操作顺序没有关系。确定了符号之后就只有两种选择:如果乘积为正,结果可能是 $C$ 或者 $D$。接下来只需要考虑所有数字的绝对值的乘积的范围,如果绝对值中包含 $(0, 1)$ 中的数,那么结果可能是 $C$;如果绝对值中包含 $[1, \infin)$ 中的数,那么结果可能是 $D$。乘积为负同理。
// Date: Mon Dec 11 22:53:18 2023
#include <climits>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <utility>
#include <vector>
using namespace std;
const int INF = 0x3f3f3f3f, MOD = 1e9 + 7;
const double eps = 1e-8;
const int dir[8][2] = {
{0, 1}, {0, -1}, {1, 0}, {-1, 0}, {1, 1}, {1, -1}, {-1, 1}, {-1, -1},
};
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> VI;
typedef pair<int, int> PII;
const ull Pr = 131;
#define For(i, a, b) for (int i = int(a); i < int(b); ++i)
#define Rof(i, a, b) for (int i = int(b) - 1; i >= int(a); --i)
#define For1(i, a, b) for (int i = int(a); i <= int(b); ++i)
#define Rof1(i, a, b) for (int i = int(b); i >= int(a); --i)
#define ForE(i, j) for (int i = h[j]; i != -1; i = ne[i])
#define f1 first
#define f2 second
#define pb push_back
#define has(a, x) (a.find(x) != a.end())
#define nonempty(a) (!a.empty())
#define all(a) (a).begin(), (a).end()
#define SZ(a) int((a).size())
#ifdef _DEBUG
#define debug1(x) cout << #x " = " << x << endl;
#define debug2(x, y) cout << #x " = " << x << " " #y " = " << y << endl;
#define debug3(x, y, z) \
cout << #x " = " << x << " " #y " = " << y << " " #z " = " << z << endl;
#else
#define debug1
#define debug2
#define debug3
#endif
int t, a, b, c, d;
bool res[10];
int main(void) {
#ifdef _DEBUG
freopen("1425h.in", "r", stdin);
#endif
std::ios::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
cin >> t;
while (t--) {
cin >> a >> b >> c >> d;
int sum = a + b, sum1 = b + c, sum2 = a + d;
memset(res, false, sizeof res);
if (sum & 1) {
if (sum1) {
res[2] = true;
}
if (sum2)
res[1] = true;
} else {
if (sum1)
res[3] = true;
if (sum2)
res[4] = true;
}
For1(i, 1, 4) { cout << (res[i] ? "Ya" : "Tidak") << ' '; }
cout << '\n';
}
return 0;
}