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답안 #299518

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
299518 2020-09-15T05:52:49 Z E869120 Mixture (BOI20_mixture) C++14
30 / 100
 2000 ms 1588 KB 
#include <bits/stdc++.h>
using namespace std;

__int128 gcd(__int128 a, __int128 b) {
	if (b == 0) return a;
	return gcd(b, a % b);
}

// ------------------------------ Fraction Class ----------------------------
struct Fraction {
	__int128 r1, r2;
};

Fraction operator+(const Fraction &a1, const Fraction &a2) {
	__int128 v1 = a1.r1 * a2.r2 + a1.r2 * a2.r1;
	__int128 v2 = a1.r2 * a2.r2;
	__int128 vv = gcd(v1, v2); if (vv < 0) vv = -vv;
	return Fraction{v1 / vv, v2 / vv};
}

Fraction operator-(const Fraction &a1, const Fraction &a2) {
	__int128 v1 = a1.r1 * a2.r2 - a1.r2 * a2.r1;
	__int128 v2 = a1.r2 * a2.r2;
	__int128 vv = gcd(v1, v2); if (vv < 0) vv = -vv;
	return Fraction{v1 / vv, v2 / vv};
}

Fraction operator*(const Fraction &a1, const Fraction &a2) {
	__int128 v1 = a1.r1 * a2.r1;
	__int128 v2 = a1.r2 * a2.r2;
	__int128 vv = gcd(v1, v2); if (vv < 0) vv = -vv;
	return Fraction{v1 / vv, v2 / vv};
}

bool operator<(const Fraction &a1, const Fraction &a2) {
	__int128 v1 = a1.r1 * a2.r2 - a1.r2 * a2.r1;
	if (v1 < 0) return true;
	return false;
}

bool operator>(const Fraction &a1, const Fraction &a2) {
	__int128 v1 = a1.r1 * a2.r2 - a1.r2 * a2.r1;
	if (v1 > 0) return true;
	return false;
}

bool operator==(const Fraction &a1, const Fraction &a2) {
	__int128 v1 = a1.r1 * a2.r2 - a1.r2 * a2.r1;
	if (v1 == 0) return true;
	return false;
}

Fraction seikika(Fraction a1) {
	__int128 vv = gcd(a1.r1, a1.r2); if (vv < 0) vv = -vv;
	return Fraction{a1.r1 / vv, a1.r2 / vv};
}

// --------------------------------- Point Class --------------------------
struct Point {
	Fraction px, py;
};

bool operator==(const Point &a1, const Point &a2) {
	if (a1.px == a2.px && a1.py == a2.py) return true;
	return false;
}

bool operator<(const Point &a1, const Point &a2) {
	if (a1.px < a2.px) return true;
	if (a1.px > a2.px) return false;
	if (a1.py < a2.py) return true;
	return false;
}

Point operator+(const Point &a1, const Point &a2) {
	return Point{a1.px + a2.px, a1.py + a2.py};
}

Point operator-(const Point &a1, const Point &a2) {
	return Point{a1.px - a2.px, a1.py - a2.py};
}

Fraction dot(Point a1, Point a2) {
	return (a1.px * a2.px) + (a1.py * a2.py);
}

Fraction crs(Point a1, Point a2) {
	Fraction t1 = (a1.px * a2.py);
	Fraction t2 = (a1.py * a2.px);
	return t1 - t2;
}

// ----------------------------------- Variables ---------------------------
Fraction ZERO = Fraction{0LL, 1LL};
long long SX, SY, SZ;
long long Q;
long long D1[1 << 18], D2[1 << 18], D3[1 << 18];
long long DD[1 << 18];
long long idx[1 << 18];
char C[1 << 18];

// Geometry Part
int N;
Point BASE;
Point H[1 << 18];
vector<pair<Point, int>> G;

// Maeshori
bool used[5009];
bool r1[5009];
bool r2[5009][5009];
int cntw = 0;

bool solve1() {
	vector<int> vec;
	for (int i = 0; i < N; i++) { if (used[i] == true) vec.push_back(i); }
	for (int i = 0; i < (int)vec.size(); i++) {
		if (r1[vec[i]] == true) return true;
	}
	return false;
}

bool solve2() {
	if (cntw >= 1) return true;
	return false;
}

bool solve3() {
	vector<int> vec;
	for (int i = 0; i < N; i++) { if (used[i] == true) vec.push_back(i); }
	if (vec.size() <= 2) return false;
	
	vector<Point> G1;
	G1.push_back(H[vec[0]]);
	G1.push_back(H[vec[1]]);
	for (int i = 2; i < (int)vec.size(); i++) {
		while (G1.size() >= 2) {
			Point H1 = G1[G1.size() - 2];
			Point H2 = G1[G1.size() - 1];
			if (crs(H1 - H[vec[i]], H2 - H[vec[i]]) < ZERO) break;
			else G1.pop_back();
		}
		G1.push_back(H[vec[i]]);
	}
	
	vector<Point> G2;
	G2.push_back(H[vec[0]]);
	G2.push_back(H[vec[1]]);
	for (int i = 2; i < (int)vec.size(); i++) {
		while (G2.size() >= 2) {
			Point H1 = G2[G2.size() - 2];
			Point H2 = G2[G2.size() - 1];
			if (crs(H1 - H[vec[i]], H2 - H[vec[i]]) > ZERO) break;
			else G2.pop_back();
		}
		G2.push_back(H[vec[i]]);
	}
	
	vector<Point> I = G1;
	for (int i = (int)G2.size() - 2; i >= 1; i--) I.push_back(G2[i]);
	
	int cnt1 = 0, cnt2 = 0, cnt3 = 0;
	for (int i = 0; i < (int)I.size(); i++) {
		int n1 = i;
		int n2 = (i + 1) % I.size();
		Fraction I2 = crs(I[n1] - BASE, I[n2] - BASE);
		if (I2 > ZERO) cnt1 += 1;
		if (I2 < ZERO) cnt2 += 1;
		if (I2 == ZERO) cnt3 += 1;
	}
	if ((cnt1 == 0 || cnt2 == 0) && cnt3 == 0) return true;
	return false;
}

int main() {
	// Step #1. Input
	cin >> SX >> SY >> SZ;
	cin >> Q;
	for (int i = 1; i <= Q; i++) {
		cin >> C[i];
		if (C[i] == 'A') {
			cin >> D1[i] >> D2[i] >> D3[i];
			Fraction V1 = seikika(Fraction{D1[i], D1[i] + D2[i] + D3[i]});
			Fraction V2 = seikika(Fraction{D2[i], D1[i] + D2[i] + D3[i]});
			G.push_back(make_pair(Point{V1, V2}, N));
			N += 1;
		}
		if (C[i] == 'R') {
			cin >> D1[i];
			D1[i] -= 1;
		}
	}
	sort(G.begin(), G.end());
	
	// Step #2. Index
	int cnts = 0;
	for (int i = 0; i < N; i++) idx[G[i].second] = i;
	for (int i = 1; i <= Q; i++) {
		if (C[i] == 'A') { DD[i] = idx[cnts]; cnts += 1; }
		if (C[i] == 'R') { D1[i] = idx[D1[i]]; }
	}
	for (int i = 0; i < N; i++) H[i] = G[i].first;
	
	// Step #3. Maeshori
	BASE.px = seikika(Fraction{SX, SX + SY + SZ});
	BASE.py = seikika(Fraction{SY, SX + SY + SZ});
	for (int i = 0; i < N; i++) {
		if (BASE == H[i]) { r1[i] = true; }
	}
	for (int i = 0; i < N; i++) {
		for (int j = i + 1; j < N; j++) {
			Point v1 = H[i] - BASE;
			Point v2 = H[j] - BASE;
			if (crs(v1, v2) == ZERO && dot(v1, v2) < ZERO) { r2[i][j] = true; }
		}
	}
	
	// Step #4. Answer Query
	for (int i = 1; i <= Q; i++) {
		if (C[i] == 'A') {
			used[DD[i]] = true;
			for (int j = 0; j < N; j++) {
				if (used[j] == true && (r2[DD[i]][j] == true || r2[j][DD[i]] == true)) cntw++;
			}
		}
		if (C[i] == 'R') {
			used[D1[i]] = false;
			for (int j = 0; j < N; j++) {
				if (used[j] == true && (r2[D1[i]][j] == true || r2[j][D1[i]] == true)) cntw--;
			}
		}
		if (solve1() == true) cout << "1" << endl;
		else if (solve2() == true) cout << "2" << endl;
		else if (solve3() == true) cout << "3" << endl;
		else cout << "0" << endl;
	}
	return 0;
}

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 2 ms 416 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 416 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 2 ms 416 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 416 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 3 ms 384 KB Output is correct
21 Correct 2 ms 512 KB Output is correct
22 Correct 33 ms 512 KB Output is correct
23 Correct 54 ms 512 KB Output is correct
24 Correct 26 ms 512 KB Output is correct
25 Correct 34 ms 1144 KB Output is correct
26 Correct 28 ms 1408 KB Output is correct
27 Correct 73 ms 512 KB Output is correct
28 Correct 188 ms 1400 KB Output is correct
29 Correct 20 ms 640 KB Output is correct
30 Correct 28 ms 768 KB Output is correct
31 Correct 10 ms 512 KB Output is correct
32 Correct 122 ms 640 KB Output is correct
33 Correct 18 ms 1408 KB Output is correct
34 Correct 242 ms 632 KB Output is correct
35 Correct 31 ms 768 KB Output is correct
36 Correct 85 ms 540 KB Output is correct

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 2 ms 416 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 416 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 3 ms 384 KB Output is correct
21 Correct 2 ms 512 KB Output is correct
22 Correct 33 ms 512 KB Output is correct
23 Correct 54 ms 512 KB Output is correct
24 Correct 26 ms 512 KB Output is correct
25 Correct 34 ms 1144 KB Output is correct
26 Correct 28 ms 1408 KB Output is correct
27 Correct 73 ms 512 KB Output is correct
28 Correct 188 ms 1400 KB Output is correct
29 Correct 20 ms 640 KB Output is correct
30 Correct 28 ms 768 KB Output is correct
31 Correct 10 ms 512 KB Output is correct
32 Correct 122 ms 640 KB Output is correct
33 Correct 18 ms 1408 KB Output is correct
34 Correct 242 ms 632 KB Output is correct
35 Correct 31 ms 768 KB Output is correct
36 Correct 85 ms 540 KB Output is correct
37 Correct 72 ms 512 KB Output is correct
38 Correct 99 ms 512 KB Output is correct
39 Correct 181 ms 640 KB Output is correct
40 Correct 816 ms 760 KB Output is correct
41 Correct 820 ms 736 KB Output is correct
42 Correct 813 ms 760 KB Output is correct
43 Correct 689 ms 760 KB Output is correct
44 Correct 697 ms 888 KB Output is correct
45 Correct 711 ms 760 KB Output is correct
46 Execution timed out 2045 ms 1588 KB Time limit exceeded
47 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 2 ms 416 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 1 ms 512 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 416 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 3 ms 384 KB Output is correct
21 Correct 2 ms 512 KB Output is correct
22 Correct 33 ms 512 KB Output is correct
23 Correct 54 ms 512 KB Output is correct
24 Correct 26 ms 512 KB Output is correct
25 Correct 34 ms 1144 KB Output is correct
26 Correct 28 ms 1408 KB Output is correct
27 Correct 73 ms 512 KB Output is correct
28 Correct 188 ms 1400 KB Output is correct
29 Correct 20 ms 640 KB Output is correct
30 Correct 28 ms 768 KB Output is correct
31 Correct 10 ms 512 KB Output is correct
32 Correct 122 ms 640 KB Output is correct
33 Correct 18 ms 1408 KB Output is correct
34 Correct 242 ms 632 KB Output is correct
35 Correct 31 ms 768 KB Output is correct
36 Correct 85 ms 540 KB Output is correct
37 Correct 72 ms 512 KB Output is correct
38 Correct 99 ms 512 KB Output is correct
39 Correct 181 ms 640 KB Output is correct
40 Correct 816 ms 760 KB Output is correct
41 Correct 820 ms 736 KB Output is correct
42 Correct 813 ms 760 KB Output is correct
43 Correct 689 ms 760 KB Output is correct
44 Correct 697 ms 888 KB Output is correct
45 Correct 711 ms 760 KB Output is correct
46 Execution timed out 2045 ms 1588 KB Time limit exceeded
47 Halted 0 ms 0 KB -