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답안 #230239

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
230239 2020-05-09T09:36:09 Z onjo0127 절취선 (JOI14_ho_t5) C++11
30 / 100
 1448 ms 262148 KB 
#include <bits/stdc++.h>
using namespace std;
using pii = pair<int, int>;
using ll = long long;
const int _N = 100009;

struct line {
	int p, l, r;
};

long long ans;
int W, H, N, A[_N], B[_N], C[_N], D[_N], pa[_N], lc;
set<pii> S;
line L[_N];

int getx(vector<int> &S, int x) { return lower_bound(S.begin(), S.end(), x) - S.begin() + 1; }

int root(int x) {
	if(pa[x] == x) return x;
	return pa[x] = root(pa[x]);
}
void merg(int u, int v) {
	u = root(u); v = root(v);
	if(u != v) pa[u] = v;
}

void dnc_y(int s, int e, vector<int> &VL, vector<int> &HL) {
	if(VL.empty() || HL.empty()) return;
	vector<int> MV, NV, LH, RH;
	int m = s+e >> 1;
	for(auto& it: VL) {
		if(L[it].r < s || e < L[it].l) continue;
		if(L[it].l <= s && e <= L[it].r) MV.push_back(it);
		else NV.push_back(it);
	}
	for(auto& it: HL) {
		if(L[it].p <= m) LH.push_back(it);
		else RH.push_back(it);
	}
	if(s != e) {
		dnc_y(s, m, NV, LH);
		dnc_y(m+1, e, NV, RH);
	}
	if(MV.size()) {
		//ans += (ll)MV.size() * (ll)HL.size();
		for(auto& it: MV) merg(it, HL[0]);
		for(auto& it: HL) merg(it, HL[0]);
		for(auto& it: MV) for(auto& jt: HL) S.insert({it, jt});
	}
}

void dnc_x(int s, int e, vector<int> &VL, vector<int> &HL) {
	if(VL.empty() || HL.empty()) return;
	vector<int> LV, RV, NH, MH;
	int m = s+e >> 1;
	for(auto& it: VL) {
		if(L[it].p <= m) LV.push_back(it);
		else RV.push_back(it);
	}
	for(auto& it: HL) {
		if(L[it].r < s || e < L[it].l) continue;
		if(L[it].l <= s && e <= L[it].r) MH.push_back(it);
		else NH.push_back(it);
	}
	if(s != e) {
		dnc_x(s, m, LV, NH);
		dnc_x(m+1, e, RV, NH);
	}
	dnc_y(1, H, VL, MH);
}

int main() {
	vector<int> XS, YS;
	scanf("%d%d%d",&W,&H,&N);
	XS.push_back(0); XS.push_back(W);
	YS.push_back(0); YS.push_back(H);
	for(int i=0; i<N; i++) {
		scanf("%d%d%d%d", &A[i], &B[i], &C[i], &D[i]);
		XS.push_back(A[i]); XS.push_back(C[i]);
		YS.push_back(B[i]); YS.push_back(D[i]);
	}
	sort(XS.begin(), XS.end()); XS.resize(unique(XS.begin(), XS.end()) - XS.begin());
	sort(YS.begin(), YS.end()); YS.resize(unique(YS.begin(), YS.end()) - YS.begin());
	W = getx(XS, W); H = getx(YS, H);
	for(int i=0; i<N; i++) {
		A[i] = getx(XS, A[i]);
		B[i] = getx(YS, B[i]);
		C[i] = getx(XS, C[i]);
		D[i] = getx(YS, D[i]);
	}
	vector<int> VL, HL;
	L[++lc] = {1, 1, H}; VL.push_back(lc);
	L[++lc] = {W, 1, H}; VL.push_back(lc);
	L[++lc] = {1, 1, W}; HL.push_back(lc);
	L[++lc] = {H, 1, W}; HL.push_back(lc);
	for(int i=0; i<N; i++) {
		if(A[i] == C[i]) {
			L[++lc] = {A[i], B[i], D[i]};
			VL.push_back(lc);
		}
		if(B[i] == D[i]) {
			L[++lc] = {B[i], A[i], C[i]};
			HL.push_back(lc);
		}
	}
	for(int i=1; i<=lc; i++) pa[i] = i;
	ans = -N-4;
	dnc_x(1, W, VL, HL);
	for(int i=1; i<=lc; i++) if(root(i) == i) ++ans;
	ans += S.size();
	printf("%lld", ans);
	return 0;
}

//f = c-v+e

Compilation message

2014_ho_t5.cpp: In function 'void dnc_y(int, int, std::vector<int>&, std::vector<int>&)':
2014_ho_t5.cpp:30:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m = s+e >> 1;
          ~^~
2014_ho_t5.cpp: In function 'void dnc_x(int, int, std::vector<int>&, std::vector<int>&)':
2014_ho_t5.cpp:55:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  int m = s+e >> 1;
          ~^~
2014_ho_t5.cpp: In function 'int main()':
2014_ho_t5.cpp:74:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d",&W,&H,&N);
  ~~~~~^~~~~~~~~~~~~~~~~~~
2014_ho_t5.cpp:78:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d", &A[i], &B[i], &C[i], &D[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 16 ms 1920 KB Output is correct
9 Correct 7 ms 384 KB Output is correct
10 Correct 15 ms 1536 KB Output is correct
11 Correct 37 ms 6904 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 33 ms 5120 KB Output is correct
14 Correct 14 ms 2048 KB Output is correct
15 Correct 14 ms 2048 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 16 ms 1920 KB Output is correct
9 Correct 7 ms 384 KB Output is correct
10 Correct 15 ms 1536 KB Output is correct
11 Correct 37 ms 6904 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 33 ms 5120 KB Output is correct
14 Correct 14 ms 2048 KB Output is correct
15 Correct 14 ms 2048 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 15 ms 1664 KB Output is correct
22 Correct 8 ms 512 KB Output is correct
23 Correct 15 ms 1664 KB Output is correct
24 Correct 30 ms 5112 KB Output is correct
25 Correct 17 ms 1792 KB Output is correct
26 Correct 7 ms 384 KB Output is correct
27 Correct 35 ms 5624 KB Output is correct
28 Correct 28 ms 4352 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 896 KB Output is correct
2 Correct 10 ms 896 KB Output is correct
3 Correct 9 ms 640 KB Output is correct
4 Correct 13 ms 816 KB Output is correct
5 Correct 80 ms 3832 KB Output is correct
6 Correct 302 ms 6656 KB Output is correct
7 Correct 543 ms 13540 KB Output is correct
8 Correct 589 ms 15080 KB Output is correct
9 Correct 344 ms 10396 KB Output is correct
10 Correct 215 ms 10280 KB Output is correct

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 30 ms 4736 KB Output is correct
3 Runtime error 1448 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -

Subtask #5
0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 8 ms 768 KB Output is correct
8 Correct 16 ms 1920 KB Output is correct
9 Correct 7 ms 384 KB Output is correct
10 Correct 15 ms 1536 KB Output is correct
11 Correct 37 ms 6904 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 33 ms 5120 KB Output is correct
14 Correct 14 ms 2048 KB Output is correct
15 Correct 14 ms 2048 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 15 ms 1664 KB Output is correct
22 Correct 8 ms 512 KB Output is correct
23 Correct 15 ms 1664 KB Output is correct
24 Correct 30 ms 5112 KB Output is correct
25 Correct 17 ms 1792 KB Output is correct
26 Correct 7 ms 384 KB Output is correct
27 Correct 35 ms 5624 KB Output is correct
28 Correct 28 ms 4352 KB Output is correct
29 Correct 10 ms 896 KB Output is correct
30 Correct 10 ms 896 KB Output is correct
31 Correct 9 ms 640 KB Output is correct
32 Correct 13 ms 816 KB Output is correct
33 Correct 80 ms 3832 KB Output is correct
34 Correct 302 ms 6656 KB Output is correct
35 Correct 543 ms 13540 KB Output is correct
36 Correct 589 ms 15080 KB Output is correct
37 Correct 344 ms 10396 KB Output is correct
38 Correct 215 ms 10280 KB Output is correct
39 Correct 5 ms 384 KB Output is correct
40 Correct 30 ms 4736 KB Output is correct
41 Runtime error 1448 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
42 Halted 0 ms 0 KB -