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답안 #299522

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
299522 2020-09-15T05:59:52 Z E869120 Mixture (BOI20_mixture) C++14
60 / 100
 1777 ms 9268 KB 
#include <bits/stdc++.h>
using namespace std;
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimize("Ofast")

__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, v2};
}

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, v2};
}

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, v2};
}

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], HH[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++) HH[i] = (H[i] - BASE);
	for (int i = 0; i < N; i++) {
		for (int j = i + 1; j < N; j++) {
			if (crs(HH[i], HH[j]) == ZERO && dot(HH[i], HH[j]) < 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 1 ms 384 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 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 512 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 1 ms 384 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 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 512 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 512 KB Output is correct
22 Correct 9 ms 512 KB Output is correct
23 Correct 7 ms 640 KB Output is correct
24 Correct 7 ms 512 KB Output is correct
25 Correct 7 ms 1408 KB Output is correct
26 Correct 7 ms 1408 KB Output is correct
27 Correct 10 ms 512 KB Output is correct
28 Correct 24 ms 1280 KB Output is correct
29 Correct 4 ms 640 KB Output is correct
30 Correct 5 ms 640 KB Output is correct
31 Correct 4 ms 512 KB Output is correct
32 Correct 12 ms 512 KB Output is correct
33 Correct 5 ms 1408 KB Output is correct
34 Correct 26 ms 512 KB Output is correct
35 Correct 4 ms 640 KB Output is correct
36 Correct 9 ms 640 KB Output is correct

Subtask #3
30.0 / 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 1 ms 384 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 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 512 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 512 KB Output is correct
22 Correct 9 ms 512 KB Output is correct
23 Correct 7 ms 640 KB Output is correct
24 Correct 7 ms 512 KB Output is correct
25 Correct 7 ms 1408 KB Output is correct
26 Correct 7 ms 1408 KB Output is correct
27 Correct 10 ms 512 KB Output is correct
28 Correct 24 ms 1280 KB Output is correct
29 Correct 4 ms 640 KB Output is correct
30 Correct 5 ms 640 KB Output is correct
31 Correct 4 ms 512 KB Output is correct
32 Correct 12 ms 512 KB Output is correct
33 Correct 5 ms 1408 KB Output is correct
34 Correct 26 ms 512 KB Output is correct
35 Correct 4 ms 640 KB Output is correct
36 Correct 9 ms 640 KB Output is correct
37 Correct 10 ms 640 KB Output is correct
38 Correct 11 ms 512 KB Output is correct
39 Correct 17 ms 768 KB Output is correct
40 Correct 60 ms 768 KB Output is correct
41 Correct 57 ms 640 KB Output is correct
42 Correct 58 ms 640 KB Output is correct
43 Correct 45 ms 748 KB Output is correct
44 Correct 54 ms 640 KB Output is correct
45 Correct 45 ms 640 KB Output is correct
46 Correct 153 ms 1768 KB Output is correct
47 Correct 444 ms 1332 KB Output is correct
48 Correct 46 ms 1112 KB Output is correct
49 Correct 82 ms 1112 KB Output is correct
50 Correct 77 ms 1248 KB Output is correct
51 Correct 1170 ms 1612 KB Output is correct
52 Correct 375 ms 1904 KB Output is correct
53 Correct 1777 ms 1904 KB Output is correct
54 Correct 1765 ms 1784 KB Output is correct
55 Correct 249 ms 9268 KB Output is correct
56 Correct 235 ms 1468 KB Output is correct

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 1 ms 384 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 1 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 512 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 512 KB Output is correct
15 Correct 1 ms 512 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 512 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 512 KB Output is correct
22 Correct 9 ms 512 KB Output is correct
23 Correct 7 ms 640 KB Output is correct
24 Correct 7 ms 512 KB Output is correct
25 Correct 7 ms 1408 KB Output is correct
26 Correct 7 ms 1408 KB Output is correct
27 Correct 10 ms 512 KB Output is correct
28 Correct 24 ms 1280 KB Output is correct
29 Correct 4 ms 640 KB Output is correct
30 Correct 5 ms 640 KB Output is correct
31 Correct 4 ms 512 KB Output is correct
32 Correct 12 ms 512 KB Output is correct
33 Correct 5 ms 1408 KB Output is correct
34 Correct 26 ms 512 KB Output is correct
35 Correct 4 ms 640 KB Output is correct
36 Correct 9 ms 640 KB Output is correct
37 Correct 10 ms 640 KB Output is correct
38 Correct 11 ms 512 KB Output is correct
39 Correct 17 ms 768 KB Output is correct
40 Correct 60 ms 768 KB Output is correct
41 Correct 57 ms 640 KB Output is correct
42 Correct 58 ms 640 KB Output is correct
43 Correct 45 ms 748 KB Output is correct
44 Correct 54 ms 640 KB Output is correct
45 Correct 45 ms 640 KB Output is correct
46 Correct 153 ms 1768 KB Output is correct
47 Correct 444 ms 1332 KB Output is correct
48 Correct 46 ms 1112 KB Output is correct
49 Correct 82 ms 1112 KB Output is correct
50 Correct 77 ms 1248 KB Output is correct
51 Correct 1170 ms 1612 KB Output is correct
52 Correct 375 ms 1904 KB Output is correct
53 Correct 1777 ms 1904 KB Output is correct
54 Correct 1765 ms 1784 KB Output is correct
55 Correct 249 ms 9268 KB Output is correct
56 Correct 235 ms 1468 KB Output is correct
57 Correct 386 ms 6384 KB Output is correct
58 Incorrect 1168 ms 2104 KB Output isn't correct
59 Halted 0 ms 0 KB -