Submission #1226375

#	Time	Username	Problem	Language	Result	Execution time	Memory
1226375		kaiboy	Bowling (BOI15_bow)	C++20	0 / 100	27 ms	1864 KiB

bow

#include <algorithm>
#include <iostream>

using namespace std;

const  int   N = 10;
const  int   S = 300;
const  int   K = 13;
const char *AA = "0123456789x-/";

char aa[N * 2 + 2]; int ss[N];
long long dp[S + 1][K][K][2], dq[S + 1][K][K][2];

bool check2(char a, char b) {
	if (a == 'x')
		return b == '-';
	if (!isdigit(a))
		return false;
	if (b == '/')
		return true;
	if (!isdigit(b))
		return false;
	return a - '0' + b - '0' < 10;
}

int geta(char a) {
	return a == 'x' ? 10 : a - '0';
}

int getb(char a, char b) {
	return b == '/' ? 10 - (a - '0') : b - '0';
}

int calc(char a, char b) {
	return a == 'x' || b == '/' ? 10 : a - '0' + b - '0';
}

int count(char a, char b) {
	return a == 'x' ? 2 : b == '/' ? 1 : 0;
}

bool check3(char a, char b, char c) {
	if (a == 'x' && b == 'x' && c == 'x')
		return true;
	if (a == 'x' && b == 'x')
		return isdigit(c);
	if (a == 'x' && c == '/')
		return isdigit(b);
	if (a == 'x')
		return isdigit(b) && isdigit(c) && b - '0' + c - '0' < 10;
	if (b == '/' && c == 'x')
		return isdigit(a);
	if (b == '/')
		return isdigit(a) && isdigit(c);
	return isdigit(a) && isdigit(b) && c == '-' && a - '0' + b - '0' < 10;
}

int main() {
	ios_base::sync_with_stdio(false), cin.tie(NULL);
	int t; cin >> t;
	while (t--) {
		int n; cin >> n >> aa;
		for (int i = 0; i < n; i++)
			cin >> ss[i];
		for (int s = 0; s <= S; s++)
			for (int ha = 0; ha < K; ha++)
				for (int hb = 0; hb < K; hb++)
					for (int f = 0; f <= 1; f++)
						dp[s][ha][hb][f] = 0;
		dp[0][0][0][0] = 1;
		for (int i = 0; i < n; i++) {
			for (int s = 0; s <= S; s++)
				for (int ha = 0; ha < K; ha++)
					for (int hb = 0; hb < K; hb++)
						for (int f = 0; f <= 1; f++)
							dq[s][ha][hb][f] = 0;
			if (i + 1 < n) {
				char c_ = aa[i * 2], d_ = aa[i * 2 + 1];
				for (int s = 0; s <= S; s++)
					for (int ha = 0; ha < K; ha++)
						for (int hb = 0; hb < K; hb++)
							for (int f = 0; f <= 1; f++) {
								long long x = dp[s][ha][hb][f];
								if (x) {
									char a = AA[ha], b = AA[hb];
									for (int hc = 0; hc < K; hc++) {
										char c = AA[hc];
										if (c_ == '?' || c == c_)
											for (int hd = 0; hd < K; hd++) {
												char d = AA[hd];
												if ((d_ == '?' || d == d_) && check2(c, d)) {
													int s_ = s + (f ? geta(c) : 0);
													if (i < 2 || s_ == ss[i - 2]) {
														int t = s_ + calc(a, b), g = 0, k = count(a, b);
														if (k)
															t += geta(c);
														if (k >= 2)
															if (c == 'x')
																g = 1;
															else
																t += getb(c, d);
														dq[t][hc][hd][g] += x;
													}
												}
											}
									}
								}
							}
			} else
				break;
			for (int s = 0; s <= S; s++)
				for (int ha = 0; ha < K; ha++)
					for (int hb = 0; hb < K; hb++)
						for (int f = 0; f <= 1; f++)
							dp[s][ha][hb][f] = dq[s][ha][hb][f];
			/*
				 cout << ">>> " << i + 1 << endl;
				 for (int s = 0; s <= S; s++)
				 for (int ha = 0; ha < K; ha++)
				 for (int hb = 0; hb < K; hb++)
				 for (int f = 0; f <= 1; f++)
				 if (dp[s][ha][hb][f])
				 cout << s << ' ' << AA[ha] << AA[hb] << ' ' << f << ": " << dp[s][ha][hb][f] << endl;
				 */
		}
		long long ans = 0;
		for (int s = 0; s <= S; s++)
			for (int ha = 0; ha < K; ha++)
				for (int hb = 0; hb < K; hb++)
					for (int f = 0; f <= 1; f++)
						ans += dp[s][ha][hb][f];
		cout << ans << '\n';
	}
	return 0;
}

• Subtask 1: 0 / 16
• Subtask 2: 0 / 17
• Subtask 3: 0 / 26
• Subtask 4: 0 / 23
• Subtask 5: 0 / 18