oj.uz

답안 #118624

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
118624 2019-06-19T09:59:54 Z roseanne_pcy Pinball (JOI14_pinball) C++14
29 / 100
 37 ms 28664 KB 
#include <bits/stdc++.h>
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
using namespace std;
#define X first
#define Y second
#define pb push_back
typedef pair<int, int> ii;
typedef long long ll;

const int maxn = 1e5+5;
int n, m;

int A[maxn], B[maxn], C[maxn], pay[maxn];
vector<int> cut;
map<int, int> bst;

struct node
{
	ll L, R, fill;
	node() : L(1e18), R(1e18), fill(1e18){}
	node(ll L, ll R, ll fill) : L(L), R(R), fill(fill){}
};

node st[12*maxn];
int cnt;

node pull(node &x, node &y)
{
	node a;
	a.L = min(x.L, y.L);
	a.R = min(x.R, y.R);
	a.fill = min(x.fill, y.fill);
	return a;
}

void build(int p = 1, int L = 1, int R = cnt)
{
	if(L == R) 
	{
		st[p] = node();
		return;
	}
	int M = (L+R)/2;
	build(2*p, L, M);
	build(2*p+1, M+1, R);
	st[p] = pull(st[2*p], st[2*p+1]);
}

node ask(int i, int j, int p = 1, int L = 1, int R = cnt)
{
	if(i> R || j< L) return node();
	if(i<= L && R<= j) return st[p];
	int M = (L+R)/2;
	node x = ask(i, j, 2*p, L, M);
	node y = ask(i, j, 2*p+1, M+1, R);
	node res = pull(x, y);
	return res;
}

void update(int x, node &dx, int p = 1, int L = 1, int R = cnt)
{
	if(L == R)
	{
		node res = pull(dx, st[p]);
		st[p] = res;
		return;
	}
	int M = (L+R)/2;
	if(x<= M) update(x, dx, 2*p, L, M);
	else update(x, dx, 2*p+1, M+1, R);
	st[p] = pull(st[2*p], st[2*p+1]);
}

int main()
{
	scanf("%d %d", &n, &m);
	for(int i = 1; i<= n; i++)
	{
		scanf("%d %d %d %d", &A[i], &B[i], &C[i], &pay[i]);
		cut.pb(A[i]); cut.pb(B[i]); cut.pb(C[i]);
	}
	sort(cut.begin(), cut.end());
	cut.resize(unique(cut.begin(), cut.end())-cut.begin());
	if(cut[0] != 1) cnt++;
	for(int i = 0; i+1< (int) cut.size(); i++)
	{
		int x = cut[i];
		cnt++;
		bst[x] = cnt;
		if(x+1 != cut[i+1]) cnt++;
	}
	cnt++;
	bst[cut.back()] = cnt;
	if(cut.back() != m) cnt++;
	for(int i = 1; i<= n; i++)
	{
		A[i] = bst[A[i]];
		B[i] = bst[B[i]];
		C[i] = bst[C[i]];
	}
	build();
	ll best = 1e18;
	for(int i = 1; i<= n; i++)
	{
		node que = ask(A[i], B[i]);
		node res;
		res.L = que.L+pay[i];
		if(A[i] == 1) res.L = min(res.L, 1LL*pay[i]);
		res.R = que.R+pay[i];
		if(B[i] == cnt) res.R = min(res.R, 1LL*pay[i]);
		res.fill = que.fill+pay[i];
		if(A[i] == 1 && B[i] == cnt) res.fill = min(res.fill, 1LL*pay[i]);
		if(A[i] == 1) res.fill = min(res.fill, pay[i]+que.R);
		if(B[i] == cnt) res.fill = min(res.fill, pay[i]+que.L);
		update(C[i], res);
		// printf("{%lld %lld %lld}\n", res.L, res.R, res.fill);
		best = min(best, res.fill);
	}
	if(best == 1e18) printf("-1\n");
	else printf("%lld\n", best);
}

Compilation message

pinball.cpp: In function 'int main()':
pinball.cpp:77:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
pinball.cpp:80:8: 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], &pay[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 28536 KB Output is correct
2 Correct 22 ms 28544 KB Output is correct
3 Correct 22 ms 28544 KB Output is correct
4 Correct 22 ms 28544 KB Output is correct
5 Correct 22 ms 28536 KB Output is correct
6 Correct 22 ms 28544 KB Output is correct
7 Correct 21 ms 28508 KB Output is correct
8 Correct 22 ms 28544 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 28536 KB Output is correct
2 Correct 22 ms 28544 KB Output is correct
3 Correct 22 ms 28544 KB Output is correct
4 Correct 22 ms 28544 KB Output is correct
5 Correct 22 ms 28536 KB Output is correct
6 Correct 22 ms 28544 KB Output is correct
7 Correct 21 ms 28508 KB Output is correct
8 Correct 22 ms 28544 KB Output is correct
9 Correct 22 ms 28544 KB Output is correct
10 Correct 22 ms 28536 KB Output is correct
11 Correct 23 ms 28544 KB Output is correct
12 Correct 24 ms 28544 KB Output is correct
13 Correct 23 ms 28544 KB Output is correct
14 Correct 24 ms 28500 KB Output is correct

Subtask #3
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 28536 KB Output is correct
2 Correct 22 ms 28544 KB Output is correct
3 Correct 22 ms 28544 KB Output is correct
4 Correct 22 ms 28544 KB Output is correct
5 Correct 22 ms 28536 KB Output is correct
6 Correct 22 ms 28544 KB Output is correct
7 Correct 21 ms 28508 KB Output is correct
8 Correct 22 ms 28544 KB Output is correct
9 Correct 22 ms 28544 KB Output is correct
10 Correct 22 ms 28536 KB Output is correct
11 Correct 23 ms 28544 KB Output is correct
12 Correct 24 ms 28544 KB Output is correct
13 Correct 23 ms 28544 KB Output is correct
14 Correct 24 ms 28500 KB Output is correct
15 Correct 23 ms 28544 KB Output is correct
16 Correct 24 ms 28528 KB Output is correct
17 Correct 37 ms 28608 KB Output is correct
18 Correct 24 ms 28536 KB Output is correct
19 Correct 25 ms 28660 KB Output is correct
20 Correct 30 ms 28664 KB Output is correct
21 Correct 24 ms 28544 KB Output is correct
22 Correct 26 ms 28664 KB Output is correct
23 Incorrect 26 ms 28664 KB Output isn't correct
24 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 28536 KB Output is correct
2 Correct 22 ms 28544 KB Output is correct
3 Correct 22 ms 28544 KB Output is correct
4 Correct 22 ms 28544 KB Output is correct
5 Correct 22 ms 28536 KB Output is correct
6 Correct 22 ms 28544 KB Output is correct
7 Correct 21 ms 28508 KB Output is correct
8 Correct 22 ms 28544 KB Output is correct
9 Correct 22 ms 28544 KB Output is correct
10 Correct 22 ms 28536 KB Output is correct
11 Correct 23 ms 28544 KB Output is correct
12 Correct 24 ms 28544 KB Output is correct
13 Correct 23 ms 28544 KB Output is correct
14 Correct 24 ms 28500 KB Output is correct
15 Correct 23 ms 28544 KB Output is correct
16 Correct 24 ms 28528 KB Output is correct
17 Correct 37 ms 28608 KB Output is correct
18 Correct 24 ms 28536 KB Output is correct
19 Correct 25 ms 28660 KB Output is correct
20 Correct 30 ms 28664 KB Output is correct
21 Correct 24 ms 28544 KB Output is correct
22 Correct 26 ms 28664 KB Output is correct
23 Incorrect 26 ms 28664 KB Output isn't correct
24 Halted 0 ms 0 KB -