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답안 #244951

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
244951 2020-07-05T09:59:46 Z vioalbert Collecting Stamps 3 (JOI20_ho_t3) C++14
15 / 100
 2000 ms 168404 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const ll N = 205;
ll n, l;
ll cl[N], ccl[N], t[N], idx[N];

void read() {
	cin >> n >> l;
	cl[0] = ccl[0] = 0;
	for(int i = 1; i <= n; i++) {
		cin >> cl[i];
		ccl[i] = l - cl[i];
		idx[i] = i;
	}
	for(int i = 1; i <= n; i++)
		cin >> t[i];
}

struct state {
	int l, r, cnt; bool dir;
	bool operator<(const state& ot) const {
		return cnt < ot.cnt;
	}
};

void solve() {
	priority_queue<pair<ll, state>, vector<pair<ll, state>>, greater<pair<ll, state>>> pq;
	ll dist[n+2][n+2][n+2][2];
	bool vis[n+2][n+2][n+2][2];
	for(int i = 0; i <= n+1; i++) {
		for(int j = 0; j <= n+1; j++) {
			for(int k = 0; k <= n+1; k++) {
				dist[i][j][k][0] = dist[i][j][k][1] = 1e15;
				vis[i][j][k][0] = vis[i][j][k][1] = 0;
			}
		}
	}
	int ans = 0;
	pq.push({0, {1, n, 0, 0}});
	dist[1][n][0][0] = 0;
	while(!pq.empty()) {
		state u = pq.top().second; pq.pop();
		if(u.l > u.r) {
			// cerr << u.l << ' ' << u.r << ' ' << u.cnt << ' ' << u.dir << '\n';
			// cerr << dist[u.l][u.r][u.cnt][u.dir] << '\n';
			ans = max(ans, u.cnt);
			continue;
		} else if(!vis[u.l][u.r][u.cnt][u.dir]) {
			vis[u.l][u.r][u.cnt][u.dir] = 1;
			// cerr << u.l << ' ' << u.r << ' ' << u.cnt << ' ' << u.dir << '\n';
			// cerr << dist[u.l][u.r][u.cnt][u.dir] << '\n';

			ll cost, total;
			if(u.dir == 0) {
				cost = ((u.l==1)?0:-cl[u.l-1]) + cl[u.l];
				total = dist[u.l][u.r][u.cnt][u.dir] + cost;
				if(dist[u.l+1][u.r][u.cnt + (total <= t[u.l])][0] > total) {
					dist[u.l+1][u.r][u.cnt + (total <= t[u.l])][0] = total;
					pq.push({dist[u.l+1][u.r][u.cnt + (total <= t[u.l])][0], {u.l+1, u.r, u.cnt + (total <= t[u.l]), 0}});
				}

				cost = ((u.l==1)?0:cl[u.l-1]) + ccl[u.r];
				total = dist[u.l][u.r][u.cnt][u.dir] + cost;
				if(dist[u.l][u.r-1][u.cnt + (total <= t[u.r])][1] > total) {
					dist[u.l][u.r-1][u.cnt + (total <= t[u.r])][1] = total;
					pq.push({dist[u.l][u.r-1][u.cnt + (total <= t[u.r])][1], {u.l, u.r-1, u.cnt + (total <= t[u.r]), 1}});
				}
			} else {
				cost = ((u.r==n)?0:-ccl[u.r+1]) + ccl[u.r];
				total = dist[u.l][u.r][u.cnt][u.dir] + cost;
				if(dist[u.l][u.r-1][u.cnt + (total <= t[u.r])][1] > total) {
					dist[u.l][u.r-1][u.cnt + (total <= t[u.r])][1] = total;
					pq.push({dist[u.l][u.r-1][u.cnt + (total <= t[u.r])][1], {u.l, u.r-1, u.cnt + (total <= t[u.r]), 1}});
				}

				cost = ((u.r==n)?0:ccl[u.r+1]) + cl[u.l];
				total = dist[u.l][u.r][u.cnt][u.dir] + cost;
				if(dist[u.l+1][u.r][u.cnt + (total <= t[u.l])][0] > total) {
					dist[u.l+1][u.r][u.cnt + (total <= t[u.l])][0] = total;
					pq.push({dist[u.l+1][u.r][u.cnt + (total <= t[u.l])][0], {u.l+1, u.r, u.cnt + (total <= t[u.l]), 0}});
				}
			}
		}
	}
	cout << ans << '\n';
}

int main() {
	ios::sync_with_stdio(0); cin.tie(0);
	read();
	solve();
	return 0;
}

Compilation message

ho_t3.cpp: In function 'void solve()':
ho_t3.cpp:41:27: warning: narrowing conversion of 'n' from 'll {aka long long int}' to 'int' inside { } [-Wnarrowing]
  pq.push({0, {1, n, 0, 0}});
                           ^

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 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# 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 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 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 512 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 512 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 512 KB Output is correct
27 Correct 4 ms 384 KB Output is correct
28 Correct 4 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 5 ms 384 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 512 KB Output is correct
34 Correct 5 ms 384 KB Output is correct
35 Correct 5 ms 384 KB Output is correct

Subtask #3
0 / 10.0

# 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 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 1145 ms 117360 KB Output is correct
19 Correct 470 ms 56032 KB Output is correct
20 Correct 147 ms 22760 KB Output is correct
21 Correct 360 ms 51940 KB Output is correct
22 Correct 720 ms 79704 KB Output is correct
23 Correct 137 ms 18692 KB Output is correct
24 Correct 44 ms 12408 KB Output is correct
25 Correct 131 ms 18320 KB Output is correct
26 Correct 20 ms 4288 KB Output is correct
27 Correct 144 ms 19176 KB Output is correct
28 Correct 38 ms 11384 KB Output is correct
29 Correct 122 ms 19716 KB Output is correct
30 Correct 47 ms 13176 KB Output is correct
31 Correct 113 ms 18152 KB Output is correct
32 Correct 39 ms 6780 KB Output is correct
33 Correct 101 ms 16624 KB Output is correct
34 Correct 17 ms 4348 KB Output is correct
35 Correct 33 ms 15040 KB Output is correct
36 Correct 24 ms 5884 KB Output is correct
37 Correct 44 ms 16756 KB Output is correct
38 Correct 37 ms 7548 KB Output is correct
39 Correct 43 ms 17780 KB Output is correct
40 Correct 28 ms 8700 KB Output is correct
41 Execution timed out 2065 ms 168404 KB Time limit exceeded
42 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# 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 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 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 512 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 5 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 512 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 512 KB Output is correct
27 Correct 4 ms 384 KB Output is correct
28 Correct 4 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 5 ms 384 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 512 KB Output is correct
34 Correct 5 ms 384 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 1145 ms 117360 KB Output is correct
37 Correct 470 ms 56032 KB Output is correct
38 Correct 147 ms 22760 KB Output is correct
39 Correct 360 ms 51940 KB Output is correct
40 Correct 720 ms 79704 KB Output is correct
41 Correct 137 ms 18692 KB Output is correct
42 Correct 44 ms 12408 KB Output is correct
43 Correct 131 ms 18320 KB Output is correct
44 Correct 20 ms 4288 KB Output is correct
45 Correct 144 ms 19176 KB Output is correct
46 Correct 38 ms 11384 KB Output is correct
47 Correct 122 ms 19716 KB Output is correct
48 Correct 47 ms 13176 KB Output is correct
49 Correct 113 ms 18152 KB Output is correct
50 Correct 39 ms 6780 KB Output is correct
51 Correct 101 ms 16624 KB Output is correct
52 Correct 17 ms 4348 KB Output is correct
53 Correct 33 ms 15040 KB Output is correct
54 Correct 24 ms 5884 KB Output is correct
55 Correct 44 ms 16756 KB Output is correct
56 Correct 37 ms 7548 KB Output is correct
57 Correct 43 ms 17780 KB Output is correct
58 Correct 28 ms 8700 KB Output is correct
59 Execution timed out 2065 ms 168404 KB Time limit exceeded
60 Halted 0 ms 0 KB -