oj.uz

답안 #73817

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
73817 2018-08-29T05:11:24 Z 윤교준(#2277) 놀이터에 떨어진 이상한 약 (FXCUP3_gorgeous) C++11
51 / 100
 1500 ms 90660 KB 
#include <bits/stdc++.h>
#define rf(x) (x)=0;while(*p<48)p++;while(47<*p)(x)=((x)<<3)+((x)<<1)+(*p++&15);
#define pb push_back
#define eb emplace_back
#define sz(V) ((int)(V).size())
#define allv(V) ((V).begin()),((V).end())
#define sorv(V) sort(allv(V))
#define revv(V) reverse(allv(V))
#define univ(V) (V).erase(unique(allv(V)),(V).end())
#define clv(V) (V).clear()
#define upmin(a,b) (a)=min((a),(b))
#define upmax(a,b) (a)=max((a),(b))
#define rb(x) ((x)&(-(x)))
#define INF (0x3f3f3f3f)
#define INFLL (0x3f3f3f3f3f3f3f3fll)
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
static unsigned char str[8800088], *p=str;
static ll __arrll[20000000], *__arrllp = __arrll;
inline ll* newll(const unsigned int SZ) {
	__arrllp += SZ;
	return __arrllp - SZ;
}
static int __arrint[20000000], *__arrintp = __arrint;
inline int* newint(const unsigned int SZ) {
	__arrintp += SZ;
	return __arrintp - SZ;
}

const int MAXN = 300005;
const int MX = 524288;

struct BIT {
	ll *d;
	int *XV;
	int n, i;
	
	void pushpoint() { n++; }
	void precalpoint() {
		if(!n) return;
		XV = newint(n);
	}
	void push(int x) { XV[i++] = x; }
	void precal() {
		if(!n) return;
		sort(XV, XV+n);
		n = int(unique(XV, XV+n) - XV);
		d = newll(n+1);
		fill(d, d+n+1, 0);
	}
	
	void upd(int x, ll r) {
		x = int(lower_bound(XV, XV+n, x) - XV) + 1;
		for(; x <= n; x += rb(x))
			if(d[x] < r) d[x] = r;
	}
	ll get(int x) {
		x = int(upper_bound(XV, XV+n, x) - XV);
		ll r = 0;
		for(; 0 < x; x -= rb(x))
			if(r < d[x]) r = d[x];
		return r;
	}
};

struct SEG {
	BIT d[MX*2];
	int mx;

	void pushpoint(int x, int y) {
		for(x += mx; x; x >>= 1)
			d[x].pushpoint();
	}
	void precalpoint() {
		for(int i = 1; i < mx*2; i++)
			d[i].precalpoint();
	}
	void push(int x, int y) {
		for(x += mx; x; x >>= 1)
			d[x].push(y);
	}
	void precal() {
		for(int i = 1; i < mx*2; i++)
			d[i].precal();
	}

	void upd(int x, int y, ll r) {
		for(x += mx; x; x >>= 1)
			d[x].upd(y, r);
	}
	ll get(int s, int y) {
		if(s < 0) return 0;
		ll r = 0, t; int e = mx-1;
		for(s += mx, e += mx; s <= e; s >>= 1, e >>= 1) {
			if(s&1) {
				t = d[s].get(y);
				if(r < t) r = t;
				s++;
			}
			if(~e&1) {
				t = d[e].get(y);
				if(r < t) r = t;
				e--;
			}
		}
		return r;
	}
} seg;

struct EVT {
	EVT(int s, int e, int x) : s(s), e(e), x(x) {}
	int s, e, x;

	inline void f(int &_s, int &_e, int &_x) const {
		_s = s; _e = e; _x = x;
	}
	bool operator < (const EVT &t) const {
		return (e-s) > (t.e-t.s);
	}
};

vector<EVT> EV;
vector<pii> LV;
vector<int> LXV, LYV;

int A[MAXN], B[MAXN];

int N;

inline bool isGood(int s, int e) { return 1 <= s && s <= e && e <= N; }

int main() {
	fread(str, 1, 8800088, stdin);

	rf(N)
	for(int i = 1; i <= N; i++) { rf(A[i]) }
	for(int i = 1; i <= N; i++) { rf(B[i]) }

	LV.eb(1, N);
	for(int i = 1, s, e; i <= N; i++) {
		s = i-A[i]+1; e = i-1;
		if(isGood(s, e)) {
			LV.eb(s, e);
			EV.eb(s, e+1, i);
		}
		s = i+1; e = i+A[i]-1;
		if(isGood(s, e)) {
			LV.eb(s, e);
			EV.eb(s-1, e, -i);
		}
	}
	for(auto &v : LV) { LXV.eb(v.first); LYV.eb(v.second); }
	sorv(LXV); univ(LXV); sorv(LYV); univ(LYV);
	for(seg.mx = 1; seg.mx < sz(LYV); seg.mx <<= 1);
	for(auto &v : LV) {
		v.first = int(lower_bound(allv(LXV), v.first) - LXV.begin());
		v.second = int(lower_bound(allv(LYV), v.second) - LYV.begin());
	}
	for(auto &v : LV) seg.pushpoint(v.second, v.first);
	seg.precalpoint();
	for(auto &v : LV) seg.push(v.second, v.first);
	seg.precal(); sorv(EV);

	for(auto &evt : EV) {
		int s, e, idx, si, ei; evt.f(s, e, idx);
		if(0 < idx) {
			ei = int(lower_bound(allv(LYV), e) - LYV.begin());
			si = int(upper_bound(allv(LXV), s) - LXV.begin()) - 1;
			ll t = seg.get(ei, si) + B[idx];
			ei = int(lower_bound(allv(LYV), e-1) - LYV.begin());
			seg.upd(ei, si, t);
		} else {
			idx = -idx;
			ei = int(lower_bound(allv(LYV), e) - LYV.begin());
			si = int(upper_bound(allv(LXV), s) - LXV.begin()) - 1;
			ll t = seg.get(ei, si) + B[idx];
			si = int(upper_bound(allv(LXV), s+1) - LXV.begin()) - 1;
			seg.upd(ei, si, t);
		}
	}

	for(int i = 1; i <= N; i++) {
		int ei = int(lower_bound(allv(LYV), i) - LYV.begin());
		int si = int(upper_bound(allv(LXV), i) - LXV.begin()) - 1;
		printf("%lld ", seg.get(ei, si) + (1 == A[i] ? B[i] : 0));
	}
	puts("");
	return 0;
}

Compilation message

gorgeous.cpp: In function 'int main()':
gorgeous.cpp:134:7: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  fread(str, 1, 8800088, stdin);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 432 KB Output is correct
4 Correct 3 ms 508 KB Output is correct
5 Correct 2 ms 508 KB Output is correct
6 Correct 4 ms 544 KB Output is correct

Subtask #2
39.0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 432 KB Output is correct
4 Correct 3 ms 508 KB Output is correct
5 Correct 2 ms 508 KB Output is correct
6 Correct 4 ms 544 KB Output is correct
7 Correct 3 ms 544 KB Output is correct
8 Correct 2 ms 544 KB Output is correct
9 Correct 2 ms 544 KB Output is correct
10 Correct 3 ms 544 KB Output is correct
11 Correct 5 ms 672 KB Output is correct
12 Correct 5 ms 816 KB Output is correct
13 Correct 5 ms 832 KB Output is correct
14 Correct 5 ms 832 KB Output is correct
15 Correct 6 ms 960 KB Output is correct

Subtask #3
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 432 KB Output is correct
4 Correct 3 ms 508 KB Output is correct
5 Correct 2 ms 508 KB Output is correct
6 Correct 4 ms 544 KB Output is correct
7 Correct 3 ms 544 KB Output is correct
8 Correct 2 ms 544 KB Output is correct
9 Correct 2 ms 544 KB Output is correct
10 Correct 3 ms 544 KB Output is correct
11 Correct 5 ms 672 KB Output is correct
12 Correct 5 ms 816 KB Output is correct
13 Correct 5 ms 832 KB Output is correct
14 Correct 5 ms 832 KB Output is correct
15 Correct 6 ms 960 KB Output is correct
16 Correct 22 ms 2016 KB Output is correct
17 Correct 131 ms 7228 KB Output is correct
18 Correct 804 ms 29196 KB Output is correct
19 Correct 1174 ms 38896 KB Output is correct
20 Execution timed out 1595 ms 90660 KB Time limit exceeded
21 Halted 0 ms 0 KB -