QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#725637#9536. Athlete Welcome CeremonywuyunzhishiWA 4ms3824kbC++203.3kb2024-11-08 19:10:072024-11-08 19:10:07

Judging History

This is the latest submission verdict.

  • [2024-11-08 19:10:07]
  • Judged
  • Verdict: WA
  • Time: 4ms
  • Memory: 3824kb
  • [2024-11-08 19:10:07]
  • Submitted

answer

#include <bits/stdc++.h>
using ll = long long;
#define A 0
#define B 1
#define C 2
const ll mod = 1e9 + 7;
// dp[i][j][k] 表示?中有i个a,j个b,结尾为k的方案数
void solve() {
	int n, q; std::cin >> n >> q;
	std::string s; std::cin >> s;
	std::vector dp(n + 1, std::vector(n + 1, std::vector<ll>(3, 0)));
	if(s[0] == 'a') dp[0][0][A] = 1;
	else if(s[0] == 'b') dp[0][0][B] = 1;
	else if(s[0] == 'c') dp[0][0][C] = 1;
	else {
		dp[1][0][A] = 1;
		dp[0][1][B] = 1;
		dp[0][0][C] = 1;;
	}

	for(int i = 1; i < n; i++) {
		std::vector<std::vector<std::vector<ll>>> t = dp;
		if(s[i] == '?') {
			for(int x = 0; x <= n; x++) {
				for(int y = 0; y <= n; y++) {
				
					if(x - 1 >= 0) dp[x][y][A] =( t[x - 1][y][B] + t[x - 1][y][C]) % mod;
					else dp[x][y][A] = 0;
					if(y - 1 >= 0) dp[x][y][B] = (t[x][y - 1][A] + t[x][y - 1][C]) % mod;
					else dp[x][y][B] = 0;
					dp[x][y][C] = (t[x][y][A] + t[x][y][B]) % mod;
				}
			}
		}
		else if(s[i] == 'a') {
			for(int x = 0; x <= n; x++) {
				for(int y = 0; y <= n; y++) {
					dp[x][y][A] = (t[x][y][B] + t[x][y][C]) % mod;
					dp[x][y][B] = 0;
					dp[x][y][C] = 0;
				}
			}
		}
		else if(s[i] == 'b') {
			for(int x = 0; x <= n; x++) {
				for(int y = 0; y <= n; y++) {
					dp[x][y][B] = (t[x][y][A] + t[x][y][C]) % mod;
					dp[x][y][A] = 0;
					dp[x][y][C] = 0;
				}
			}
		}
		else if(s[i] == 'c') {
			for(int x = 0; x <= n; x++) {
				for(int y = 0; y <= n; y++) {
					dp[x][y][C] = (t[x][y][A] + t[x][y][B]) % mod;
					dp[x][y][A] = 0;
					dp[x][y][B] = 0;
				}
			}
		}
//		std::cout << '\n' << i << ": " << '\n';
//		for(int x = 0; x <= n; x++) {
//			for(int y = 0; y <= n; y++) {
//				std::cerr << dp[x][y][A] + dp[x][y][B] + dp[x][y][C] << " ";
//			}
//			std::cout << '\n';
//		}
	}
	
	std::vector sum(n + 1, std::vector<int>(n + 1, 0));
	for(int i = 0; i <= n; i++) {
		for(int j = 0; j <= n; j++) {
			sum[i][j] = (dp[i][j][A] + dp[i][j][B] + dp[i][j][C]) % mod;
		}
	}
	
	for(int i = 0; i <= n; i++) {
		for(int j = 0; j <= n; j++) {
			if(i + 1 <= n) sum[i + 1][j] += sum[i][j];  
			sum[i][j] %= mod;
		}
	}
	
	for(int i = 0; i <= n; i++) {
		for(int j = 0; j <= n; j++) {
			if(j + 1 <= n) sum[i][j + 1] += sum[i][j];
			sum[i][j] %= mod;
		}
	}
	
	std::vector sumt(n + 1, std::vector<int>(n + 1, 0));
	for(int x = 0; x <= n; x++) {
		for(int y = 0; y <= n; y++) {
			sumt[x][y] = dp[x][y][A] + dp[x][y][B] + dp[x][y][C];
			sumt[x][y] %= mod;
		}
	}
	
	for(int i = 0; i <= n; i++) {
		for(int j = 0; j <= n; j++) {
			if(i + 1 <= n) sumt[i + 1][j] += sumt[i][j];  
			sumt[i][j] %= mod;
		}
	}
	int d = 0;
	for(int i = 0; i < s.size(); i++) {
		if(s[i] == '?') d++;
	}
//	for(int x = 0; x <= n; x++) {
//		for(int y = 0; y <= n; y++) {
//			std::cerr << dp[x][y][A] + dp[x][y][B] + dp[x][y][C] << " ";
//		}
//		std::cout << '\n';
//	}
	while(q--) {
		int x, y, z;
		std::cin >> x >> y >> z; 
		// x + y  < d - z
		ll ans = sum[x][y];
		for(int i = 0; i <= n; i++) {
			if(i > x) break;
			int j = std::min(d - z - 1 - i, y);
			if(j < 0) break;
			ans -= sumt[i][j];
		}
		std::cout << (ans % mod + mod) % mod<< '\n';
	}	
}

int main()
{
	//std::ios::sync_with_stdio(0);
	//std::cin.tie(0);
	//std::cout.tie(0);
	int t = 1;
//	std::cin >> t;
	while(t--) solve();
	return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3536kb

input:

6 3
a?b??c
2 2 2
1 1 1
1 0 2

output:

3
1
1

result:

ok 3 lines

Test #2:

score: 0
Accepted
time: 0ms
memory: 3488kb

input:

6 3
??????
2 2 2
2 3 3
3 3 3

output:

30
72
96

result:

ok 3 lines

Test #3:

score: 0
Accepted
time: 0ms
memory: 3644kb

input:

1 1
?
0 1 1

output:

2

result:

ok single line: '2'

Test #4:

score: 0
Accepted
time: 0ms
memory: 3568kb

input:

10 10
acab?cbaca
0 2 0
1 1 2
4 2 3
1 1 1
3 5 1
0 5 2
2 2 0
1 2 5
4 3 0
1 1 3

output:

0
1
1
1
1
0
1
1
1
1

result:

ok 10 lines

Test #5:

score: 0
Accepted
time: 0ms
memory: 3616kb

input:

10 10
?c?c?cbac?
10 5 1
5 8 7
9 2 6
5 7 1
5 2 6
5 6 5
5 10 3
9 1 10
2 5 9
1 2 9

output:

16
16
11
16
11
16
16
5
11
0

result:

ok 10 lines

Test #6:

score: -100
Wrong Answer
time: 4ms
memory: 3824kb

input:

50 100
?abacbacab?cbcbcb?acabcbabcbcacbababc?caba?acacbca
8 3 8
2 4 8
8 7 3
0 9 2
10 8 7
7 6 5
4 10 2
6 9 3
3 6 6
9 10 8
2 5 8
8 1 0
3 5 0
1 0 6
5 0 8
6 5 5
1 7 9
7 7 10
4 7 5
6 6 4
10 1 2
4 1 7
10 0 8
7 6 3
1 9 1
4 7 2
8 4 0
8 6 1
5 10 4
5 8 2
5 8 4
4 5 9
5 2 1
1 10 9
4 10 1
8 4 3
8 9 9
8 0 1
0 8 0...

output:

8
8
8
0
8
8
6
8
8
8
8
1000000003
1
0
1
8
4
8
8
8
2
4
1
8
2
6
0
2
8
6
8
8
1
4
2
8
8
1000000006
0
8
2
1000000005
8
8
8
4
8
8
8
8
2
0
3
4
8
8
1
8
7
6
7
0
8
8
8
0
4
7
8
4
3
8
0
4
8
8
8
7
8
4
7
2
8
8
8
0
2
2
8
8
8
4
4
0
8
0
8
8
1
1

result:

wrong answer 12th lines differ - expected: '0', found: '1000000003'