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답안 #554630

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
554630 2022-04-29T01:29:24 Z pavement Lamps (JOI19_lamps) C++17
6 / 100
 1000 ms 205712 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
#define int long long
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define ppb pop_back
#define eb emplace_back
#define g0(a) get<0>(a)
#define g1(a) get<1>(a)
#define g2(a) get<2>(a)
#define g3(a) get<3>(a)
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
using db = double;
using ll = long long;
using ld = long double;
using ii = pair<int, int>;
using iii = tuple<int, int, int>;
using iiii = tuple<int, int, int, int>;
template<class key, class value = null_type, class cmp = less<key> >
using ordered_set = tree<key, value, cmp, rb_tree_tag, tree_order_statistics_node_update>;

int N, mem[1000005][16];
bool A[1000005], B[1000005];
char C;

// 0: 
// 1: 0
// 2: 1
// 3: T
// 4: 01
// 5: 10
// 6: 0T
// 7: T0
// 8: 1T
// 9: T1
// 10: 01T
// 11: 0T1
// 12: 10T
// 13: 1T0
// 14: T01
// 15: T10

string S[] = {"", "0", "1", "T", "01", "10", "0T", "T0", "1T", "T1", "01T", "0T1", "10T", "1T0", "T01", "T10"};

bool apply(bool x, int b) {
	if (b == 0) return x;
	else if (b == 1 || b == 5 || b == 7 || b == 8 || b == 10 || b == 13 || b == 15) return 0;
	else if (b == 2 || b == 4 || b == 6 || b == 9 || b == 11 || b == 12 || b == 14) return 1;
	else return !x;
}

bool is_subseq(string a, string b) {
	int pos = 0;
	for (int i = 0; i < b.size(); i++) {
		while (pos < a.size() && b[i] != a[pos]) pos++;
		if (pos < a.size()) pos++;
		else return 0;
	}
	return 1;
}

int cst(int a, int b) {
	int lcp = 0;
	for (int i = 0; i < min(S[a].size(), S[b].size()); i++)
		if (is_subseq(S[a], S[b].substr(0, i + 1))) lcp = i + 1;
		else break;
	return S[b].size() - lcp;
}

int dp(int n, int b) {
	if (n == N + 1) return 0;
	if (mem[n][b] != -1) return mem[n][b];
	int ret = LLONG_MAX;
	for (int nb = 0; nb < 16; nb++)
		if (apply(A[n], nb) == B[n]) ret = min(ret, dp(n + 1, nb) + cst(b, nb));
	return mem[n][b] = ret;
}

main() {
	memset(mem, -1, sizeof mem);
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> N;
	for (int i = 1; i <= N; i++) {
		cin >> C;
		A[i] = C == '1';
	}
	for (int i = 1; i <= N; i++) {
		cin >> C;
		B[i] = C == '1';
	}
	cout << dp(1, 0) << '\n';
}

Compilation message

lamp.cpp: In function 'bool is_subseq(std::string, std::string)':
lamp.cpp:61:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |  for (int i = 0; i < b.size(); i++) {
      |                  ~~^~~~~~~~~~
lamp.cpp:62:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |   while (pos < a.size() && b[i] != a[pos]) pos++;
      |          ~~~~^~~~~~~~~~
lamp.cpp:63:11: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |   if (pos < a.size()) pos++;
      |       ~~~~^~~~~~~~~~
lamp.cpp: In function 'long long int cst(long long int, long long int)':
lamp.cpp:71:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'const long unsigned int' [-Wsign-compare]
   71 |  for (int i = 0; i < min(S[a].size(), S[b].size()); i++)
      |                  ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
lamp.cpp: At global scope:
lamp.cpp:86:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   86 | main() {
      | ^~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 125516 KB Output is correct
2 Correct 47 ms 125460 KB Output is correct
3 Correct 46 ms 125444 KB Output is correct
4 Correct 49 ms 125480 KB Output is correct
5 Correct 45 ms 125548 KB Output is correct
6 Correct 45 ms 125524 KB Output is correct
7 Correct 46 ms 125524 KB Output is correct
8 Correct 47 ms 125544 KB Output is correct
9 Correct 47 ms 125608 KB Output is correct
10 Correct 45 ms 125532 KB Output is correct
11 Correct 46 ms 125516 KB Output is correct
12 Correct 47 ms 125464 KB Output is correct
13 Correct 46 ms 125668 KB Output is correct
14 Correct 51 ms 125436 KB Output is correct
15 Correct 45 ms 125520 KB Output is correct
16 Correct 51 ms 125476 KB Output is correct
17 Correct 45 ms 125516 KB Output is correct
18 Correct 47 ms 125460 KB Output is correct
19 Correct 46 ms 125464 KB Output is correct
20 Correct 46 ms 125484 KB Output is correct
21 Correct 48 ms 125540 KB Output is correct
22 Correct 49 ms 125464 KB Output is correct
23 Correct 46 ms 125532 KB Output is correct
24 Correct 47 ms 125516 KB Output is correct
25 Correct 45 ms 125516 KB Output is correct
26 Correct 47 ms 125516 KB Output is correct
27 Correct 47 ms 125544 KB Output is correct
28 Correct 54 ms 125532 KB Output is correct
29 Correct 51 ms 125532 KB Output is correct
30 Correct 47 ms 125516 KB Output is correct
31 Correct 49 ms 125508 KB Output is correct
32 Correct 46 ms 125544 KB Output is correct
33 Correct 47 ms 125560 KB Output is correct
34 Correct 47 ms 125444 KB Output is correct

Subtask #2
0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 125516 KB Output is correct
2 Correct 47 ms 125460 KB Output is correct
3 Correct 46 ms 125444 KB Output is correct
4 Correct 49 ms 125480 KB Output is correct
5 Correct 45 ms 125548 KB Output is correct
6 Correct 45 ms 125524 KB Output is correct
7 Correct 46 ms 125524 KB Output is correct
8 Correct 47 ms 125544 KB Output is correct
9 Correct 47 ms 125608 KB Output is correct
10 Correct 45 ms 125532 KB Output is correct
11 Correct 46 ms 125516 KB Output is correct
12 Correct 47 ms 125464 KB Output is correct
13 Correct 46 ms 125668 KB Output is correct
14 Correct 51 ms 125436 KB Output is correct
15 Correct 45 ms 125520 KB Output is correct
16 Correct 51 ms 125476 KB Output is correct
17 Correct 45 ms 125516 KB Output is correct
18 Correct 47 ms 125460 KB Output is correct
19 Correct 46 ms 125464 KB Output is correct
20 Correct 46 ms 125484 KB Output is correct
21 Correct 48 ms 125540 KB Output is correct
22 Correct 49 ms 125464 KB Output is correct
23 Correct 46 ms 125532 KB Output is correct
24 Correct 47 ms 125516 KB Output is correct
25 Correct 45 ms 125516 KB Output is correct
26 Correct 47 ms 125516 KB Output is correct
27 Correct 47 ms 125544 KB Output is correct
28 Correct 54 ms 125532 KB Output is correct
29 Correct 51 ms 125532 KB Output is correct
30 Correct 47 ms 125516 KB Output is correct
31 Correct 49 ms 125508 KB Output is correct
32 Correct 46 ms 125544 KB Output is correct
33 Correct 47 ms 125560 KB Output is correct
34 Correct 47 ms 125444 KB Output is correct
35 Correct 55 ms 125628 KB Output is correct
36 Correct 59 ms 125684 KB Output is correct
37 Correct 54 ms 125620 KB Output is correct
38 Correct 56 ms 125648 KB Output is correct
39 Correct 56 ms 125736 KB Output is correct
40 Incorrect 54 ms 125636 KB Output isn't correct
41 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 125536 KB Output is correct
2 Correct 47 ms 125492 KB Output is correct
3 Correct 48 ms 125460 KB Output is correct
4 Correct 48 ms 125572 KB Output is correct
5 Correct 47 ms 125504 KB Output is correct
6 Correct 46 ms 125464 KB Output is correct
7 Execution timed out 1109 ms 205712 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 45 ms 125516 KB Output is correct
2 Correct 47 ms 125460 KB Output is correct
3 Correct 46 ms 125444 KB Output is correct
4 Correct 49 ms 125480 KB Output is correct
5 Correct 45 ms 125548 KB Output is correct
6 Correct 45 ms 125524 KB Output is correct
7 Correct 46 ms 125524 KB Output is correct
8 Correct 47 ms 125544 KB Output is correct
9 Correct 47 ms 125608 KB Output is correct
10 Correct 45 ms 125532 KB Output is correct
11 Correct 46 ms 125516 KB Output is correct
12 Correct 47 ms 125464 KB Output is correct
13 Correct 46 ms 125668 KB Output is correct
14 Correct 51 ms 125436 KB Output is correct
15 Correct 45 ms 125520 KB Output is correct
16 Correct 51 ms 125476 KB Output is correct
17 Correct 45 ms 125516 KB Output is correct
18 Correct 47 ms 125460 KB Output is correct
19 Correct 46 ms 125464 KB Output is correct
20 Correct 46 ms 125484 KB Output is correct
21 Correct 48 ms 125540 KB Output is correct
22 Correct 49 ms 125464 KB Output is correct
23 Correct 46 ms 125532 KB Output is correct
24 Correct 47 ms 125516 KB Output is correct
25 Correct 45 ms 125516 KB Output is correct
26 Correct 47 ms 125516 KB Output is correct
27 Correct 47 ms 125544 KB Output is correct
28 Correct 54 ms 125532 KB Output is correct
29 Correct 51 ms 125532 KB Output is correct
30 Correct 47 ms 125516 KB Output is correct
31 Correct 49 ms 125508 KB Output is correct
32 Correct 46 ms 125544 KB Output is correct
33 Correct 47 ms 125560 KB Output is correct
34 Correct 47 ms 125444 KB Output is correct
35 Correct 55 ms 125628 KB Output is correct
36 Correct 59 ms 125684 KB Output is correct
37 Correct 54 ms 125620 KB Output is correct
38 Correct 56 ms 125648 KB Output is correct
39 Correct 56 ms 125736 KB Output is correct
40 Incorrect 54 ms 125636 KB Output isn't correct
41 Halted 0 ms 0 KB -