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답안 #56963

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
56963 2018-07-13T10:55:12 Z youngyojun 방벽 (JOI15_walls) C++11
100 / 100
 1181 ms 47688 KB 
#include <bits/stdc++.h>
#define pb push_back
#define eb emplace_back
#define sz(V) ((int)(V).size())
#define allv(V) ((V).begin()),((V).end())
#define befv(V) ((V)[(sz(V)-2)])
#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 cb(x) (x)=(!(x))
#define INF (0x3f3f3f3f)
#define INFLL (0x3f3f3f3f3f3f3f3fll)
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;

const int MAXN = 200005;
const int MAXQ = 200005;

set<pii> EV;
set<int> CH; ll CHL;

int A[MAXN], B[MAXN], L[MAXN], O[MAXN];
int C[MAXQ];

ll Ans[MAXN];
int N, Q;

pii f(int a, int b) { return pii(abs(C[a] - C[b]), min(a, b)); }

void process() {
	if(1 == Q) {
		for(int i = 1; i <= N; i++) {
			ll &ret = Ans[i];
			if(A[i] <= C[1] && C[1] <= B[i]) ret = 0;
			else if(B[i] < C[1]) ret = C[1] - B[i];
			else ret = A[i] - C[1];
		}
		return;
	}

	for(int i = 1; i <= Q; i++) CH.insert(i);
	for(int i = 1; i < Q; i++) EV.insert(f(i, i+1));
	for(int i = 1; i < Q; i++) CHL += abs(C[i+1] - C[i]);

	for(int oi = 1, i; oi <= N; oi++) {
		i = O[oi];

		for(int a, b, l; 2 < sz(CH) && !EV.empty();) {
			tie(l, a) = *EV.begin();
			if(L[i] < l) break;

			b = *next(CH.lower_bound(a));
			EV.erase(f(a, b));
			CHL -= abs(C[a] - C[b]);

			if(*CH.begin() == a) {
				CH.erase(a);
				continue;
			} else if(*prev(CH.end()) == b) {
				CH.erase(b);
				continue;
			}

			int u = *next(CH.lower_bound(b));
			int d = *prev(CH.lower_bound(a));

			EV.erase(f(u, b));
			EV.erase(f(a, d));
			EV.insert(f(u, d));
			CH.erase(a); CH.erase(b);

			CHL -= abs(C[u] - C[b]);
			CHL -= abs(C[a] - C[d]);
			CHL += abs(C[u] - C[d]);
		}

		ll &ret = Ans[i];
		int X = A[i];
		int a = *CH.begin(), b = *next(CH.begin());

		if(2 < sz(CH)) {
			ret = CHL - ll(sz(CH) - 1) * L[i];

			if(C[a] < C[b]) ret += abs(C[a] - X);
			else ret += abs(C[a] - B[i]);
		} else {
			if(C[a] < C[b]) {
				ret = abs(C[a] - X);
				int Y = C[a] + L[i];
				if(Y < C[b]) ret += abs(C[b] - Y);

				if(C[b]-C[a] <= L[i]) upmin(ret, (ll)min(abs(B[i] - C[b]), abs(A[i] - C[a])));
				if(A[i] <= C[a] && C[b] <= B[i]) ret = 0;
			} else {
				ret = abs(C[a] - B[i]);
				int Y = C[a] - L[i];
				if(C[b] < Y) ret += abs(C[b] - Y);

				if(C[a]-C[b] <= L[i]) upmin(ret, (ll)min(abs(B[i] - C[a]), abs(A[i] - C[b])));
				if(A[i] <= C[b] && C[a] <= B[i]) ret = 0;
			}
		}
	}
}

int main() {
	ios::sync_with_stdio(false);

	cin >> N >> Q;
	for(int i = 1; i <= N; i++) cin >> A[i] >> B[i];
	for(int i = 1; i <= Q; i++) cin >> C[i];

	{
		vector<int> V; V.eb(C[1]);
		for(int i = 2; i <= Q; i++) {
			if(V.back() == C[i]) continue;
			for(; 1 < sz(V) && (befv(V) < V.back()) == (V.back() < C[i]); V.pop_back());
			V.eb(C[i]);
		}
		Q = sz(V);
		for(int i = 1; i <= Q; i++) C[i] = V[i-1];
	}

	for(int i = 1; i <= N; i++) L[i] = B[i] - A[i];
	iota(O, O+N+1, 0); sort(O+1, O+N+1, [&](int a, int b) { return L[a] < L[b]; });

	process();

	for(int i = 1; i <= N; i++) printf("%lld\n", Ans[i]);
	return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 1144 KB Output is correct
2 Correct 350 ms 15864 KB Output is correct
3 Correct 539 ms 22128 KB Output is correct
4 Correct 509 ms 22128 KB Output is correct
5 Correct 652 ms 22128 KB Output is correct
6 Correct 317 ms 22128 KB Output is correct
7 Correct 33 ms 22128 KB Output is correct
8 Correct 41 ms 22128 KB Output is correct

Subtask #2
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 52 ms 22128 KB Output is correct
2 Correct 610 ms 22128 KB Output is correct
3 Correct 133 ms 22128 KB Output is correct
4 Correct 1181 ms 32420 KB Output is correct
5 Correct 589 ms 32420 KB Output is correct
6 Correct 1091 ms 32448 KB Output is correct
7 Correct 579 ms 32448 KB Output is correct
8 Correct 899 ms 32564 KB Output is correct
9 Correct 111 ms 32564 KB Output is correct
10 Correct 330 ms 32564 KB Output is correct

Subtask #3
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 1144 KB Output is correct
2 Correct 350 ms 15864 KB Output is correct
3 Correct 539 ms 22128 KB Output is correct
4 Correct 509 ms 22128 KB Output is correct
5 Correct 652 ms 22128 KB Output is correct
6 Correct 317 ms 22128 KB Output is correct
7 Correct 33 ms 22128 KB Output is correct
8 Correct 41 ms 22128 KB Output is correct
9 Correct 52 ms 22128 KB Output is correct
10 Correct 610 ms 22128 KB Output is correct
11 Correct 133 ms 22128 KB Output is correct
12 Correct 1181 ms 32420 KB Output is correct
13 Correct 589 ms 32420 KB Output is correct
14 Correct 1091 ms 32448 KB Output is correct
15 Correct 579 ms 32448 KB Output is correct
16 Correct 899 ms 32564 KB Output is correct
17 Correct 111 ms 32564 KB Output is correct
18 Correct 330 ms 32564 KB Output is correct
19 Correct 590 ms 32564 KB Output is correct
20 Correct 907 ms 44196 KB Output is correct
21 Correct 518 ms 44196 KB Output is correct
22 Correct 739 ms 45084 KB Output is correct
23 Correct 601 ms 45084 KB Output is correct
24 Correct 1142 ms 47688 KB Output is correct
25 Correct 181 ms 47688 KB Output is correct
26 Correct 175 ms 47688 KB Output is correct
27 Correct 406 ms 47688 KB Output is correct