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답안 #27286

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
27286 2017-07-12T07:04:59 Z 김현수(#1143) Dragon 2 (JOI17_dragon2) C++14
60 / 100
 799 ms 262144 KB 
#include<bits/stdc++.h>
#define X first
#define Y second
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;

ll n, m, q, s1, s2, ans[100005];
pll p1, p2, qry[100005], piv;

map<pll, ll> mem;
vector<ll> z1, z2;
vector<pll> drg[30005], cp, pt;

struct data {pll s[2], e[2]; ll i;};
vector<data> rd[30005];

struct sweep {ll s, e, x, i;};
vector<sweep> swp[1111111];

struct segtree {
	ll v[2222222], lim;
	void init () {
		for(lim=1;lim<=s2;lim<<=1);
		for(ll i=2*lim;--i;) v[i] = 0;
	}
	void upd (ll P, ll V) {
		P += lim;
		while(P) {v[P] += V; P >>= 1;}
	}
	ll get (ll S, ll E) {
		S += lim; E += lim;
		ll ret = 0;
		while(S <= E) {
			if(S%2==1) ret += v[S++];
			if(E%2==0) ret += v[E--];
			S >>= 1; E >>= 1;
		}
		return ret;
	}
} seg;

ll ccw (const pll &A, const pll &B, const pll &C) {
	return (A.X*B.Y+B.X*C.Y+C.X*A.Y) - (A.Y*B.X+B.Y*C.X+C.Y*A.X);
}

bool isup (const pll &A, const pll &B) {
	return (A.Y < B.Y || (A.Y == B.Y && A.X < B.X));
}

bool cmp (const pll &A, const pll &B) {
	bool F1 = isup(piv, A), F2 = isup(piv, B);
	if(F1 != F2) return F1;
	return ccw(piv, A, B) > 0;
}

void cpr (pll &P, vector<pll> &D, vector<data> &R, int O, vector<ll> &V, ll &S) {
	cp.clear(); V.clear(); piv = P;
	for(auto &T : D) cp.push_back(T);
	for(auto &T : R) {
		cp.push_back(T.s[O]);
		cp.push_back(T.e[O]);
	}
	sort(cp.begin(), cp.end(), cmp);
	cp.erase(unique(cp.begin(), cp.end()), cp.end());
	S = cp.size();
	for(auto &T : D) {
		V.push_back(lower_bound(cp.begin(), cp.end(), T, cmp) - cp.begin() + 1);
	}
	for(auto &T : R) {
		T.s[O].X = lower_bound(cp.begin(), cp.end(), T.s[O], cmp) - cp.begin() + 1;
		T.e[O].X = lower_bound(cp.begin(), cp.end(), T.e[O], cmp) - cp.begin() + 1;
	}
}

void add (ll XS, ll XE, ll YS, ll YE, ll I) {
	if(XS > XE) {
		add(XS, s1, YS, YE, I);
		add(1, XE, YS, YE, I);
	}
	else if(YS > YE) {
		add(XS, XE, YS, s2, I);
		add(XS, XE, 1, YE, I);
	}
	else {
		swp[XE].push_back({YS, YE, 1, I});
		swp[XS-1].push_back({YS, YE, -1, I});
	}
}

pll Flip (const pll &A, const pll &B) {
	return pll(2*A.X - B.X, 2*A.Y - B.Y);
}

void sadi (ll S, ll M, ll I) {
	for(auto &T : drg[S]) {
		data C; C.i = I;
		C.s[0] = T; C.e[0] = Flip(p1, T);
		if(ccw(p1, C.s[0], p2) < 0) swap(C.s[0], C.e[0]);
		C.s[1] = T; C.e[1] = Flip(p2, T);
		if(ccw(p2, C.s[1], p1) < 0) swap(C.s[1], C.e[1]);
		rd[M].push_back(C);
	}
}

void majo (ll S, ll M, ll I) {
	for(auto &T : drg[M]) {
		data C; C.i = I;
		C.s[0] = p2; C.e[0] = Flip(p1, T);
		if(ccw(p1, C.s[0], C.e[0]) < 0) swap(C.s[0], C.e[0]);
		C.s[1] = p1; C.e[1] = Flip(p2, T);
		if(ccw(p2, C.s[1], C.e[1]) < 0) swap(C.s[1], C.e[1]);
		rd[S].push_back(C);
	}
	for(auto &T : drg[M]) {
		data C; C.i = I;
		C.s[0] = T; C.e[0] = Flip(p1, T);
		if(ccw(p1, C.s[0], p2) > 0) swap(C.s[0], C.e[0]);
		C.s[1] = T; C.e[1] = Flip(p2, T);
		if(ccw(p2, C.s[1], p1) > 0) swap(C.s[1], C.e[1]);
		rd[S].push_back(C);
	}
}

int main()
{
	scanf("%lld%lld",&n,&m);
	for(ll i=1;i<=n;i++) {
		ll A, B, C;
		scanf("%lld%lld%lld",&A,&B,&C);
		drg[C].push_back(pll(A, B));
	}
	scanf("%lld%lld%lld%lld%lld",&p1.X,&p1.Y,&p2.X,&p2.Y,&q);
	for(ll i=1;i<=q;i++) {
		ll A, B;
		scanf("%lld%lld",&A, &B);
		qry[i] = pll(A, B);
		if(!mem[qry[i]]) {
			mem[qry[i]] = 1;
			if(drg[A].size() < drg[B].size()) sadi(A, B, i);
			else majo(A, B, i);
		}
	}
	for(ll i=1;i<=m;i++) {
		cpr(p1, drg[i], rd[i], 0, z1, s1);
		cpr(p2, drg[i], rd[i], 1, z2, s2);
		for(ll j=0;j<=s1;j++) {swp[j].clear(); swp[j].shrink_to_fit();}
		for(auto &T : rd[i]) {
			add(T.s[0].X, T.e[0].X, T.s[1].X, T.e[1].X, T.i);
		}
		seg.init(); pt.clear();
		for(ll j=0;j<drg[i].size();j++) {
			pt.push_back(pll(z1[j], z2[j]));
		}
		sort(pt.begin(), pt.end());
		for(ll j=1,k=0;j<=s1;j++) {
			while(k < pt.size() && pt[k].X <= j) {
				seg.upd(pt[k].Y, 1); k++;
			}
			for(auto &T : swp[j]) {
				ans[T.i] += seg.get(T.s, T.e) * T.x;
			}
		}
	}
	for(ll i=1;i<=q;i++) {
		mem[qry[i]] += ans[i];
		printf("%lld\n", mem[qry[i]]-1);
	}
}

Compilation message

dragon2.cpp: In function 'int main()':
dragon2.cpp:152:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(ll j=0;j<drg[i].size();j++) {
               ^
dragon2.cpp:157:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while(k < pt.size() && pt[k].X <= j) {
            ^
dragon2.cpp:127:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld",&n,&m);
                         ^
dragon2.cpp:130:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld%lld",&A,&B,&C);
                                 ^
dragon2.cpp:133:58: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld%lld%lld%lld",&p1.X,&p1.Y,&p2.X,&p2.Y,&q);
                                                          ^
dragon2.cpp:136:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld",&A, &B);
                           ^

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 50412 KB Output is correct
2 Correct 53 ms 52628 KB Output is correct
3 Correct 473 ms 73008 KB Output is correct
4 Correct 799 ms 91368 KB Output is correct
5 Correct 403 ms 64092 KB Output is correct
6 Correct 13 ms 49584 KB Output is correct
7 Correct 13 ms 49584 KB Output is correct
8 Correct 16 ms 49840 KB Output is correct
9 Correct 9 ms 50276 KB Output is correct
10 Correct 16 ms 50156 KB Output is correct

Subtask #2
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 126 ms 60932 KB Output is correct
2 Correct 759 ms 91416 KB Output is correct
3 Correct 119 ms 55564 KB Output is correct
4 Correct 43 ms 50376 KB Output is correct
5 Correct 26 ms 49980 KB Output is correct
6 Correct 133 ms 59892 KB Output is correct
7 Correct 123 ms 60128 KB Output is correct
8 Correct 76 ms 54784 KB Output is correct
9 Correct 93 ms 59220 KB Output is correct
10 Correct 83 ms 58708 KB Output is correct

Subtask #3
0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 50412 KB Output is correct
2 Correct 53 ms 52628 KB Output is correct
3 Correct 473 ms 73008 KB Output is correct
4 Correct 799 ms 91368 KB Output is correct
5 Correct 403 ms 64092 KB Output is correct
6 Correct 13 ms 49584 KB Output is correct
7 Correct 13 ms 49584 KB Output is correct
8 Correct 16 ms 49840 KB Output is correct
9 Correct 9 ms 50276 KB Output is correct
10 Correct 16 ms 50156 KB Output is correct
11 Correct 126 ms 60932 KB Output is correct
12 Correct 759 ms 91416 KB Output is correct
13 Correct 119 ms 55564 KB Output is correct
14 Correct 43 ms 50376 KB Output is correct
15 Correct 26 ms 49980 KB Output is correct
16 Correct 133 ms 59892 KB Output is correct
17 Correct 123 ms 60128 KB Output is correct
18 Correct 76 ms 54784 KB Output is correct
19 Correct 93 ms 59220 KB Output is correct
20 Correct 83 ms 58708 KB Output is correct
21 Correct 139 ms 60940 KB Output is correct
22 Correct 743 ms 90792 KB Output is correct
23 Memory limit exceeded 123 ms 262144 KB Memory limit exceeded
24 Halted 0 ms 0 KB -