Contests

#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#include <string>
#define M 1000000007

using namespace std;


int main()
{
	cin.sync_with_stdio(false);
	
	int n, s;
	cin>>n>>s;
	
	int sum = 0;
	int a = 0;
	for (int i = 0; i < n; i++) {
		string c;
		cin>>c;
		if (c == "?") a++;
		else if (c == "10") sum += 10;
		else sum += (c[0] - '0');
	}
	
	if (sum == s) {
		cout<<1<<endl;
		return 0;
	}
	
	long long v[s + 1];
	for (int i = 0; i < s+1; i++) v[i] = 0;
	
	v[sum] = 1;
	
	for (int i = 0; i < a; i++) {
		long long t[s + 1];
		for (int i = 0; i < s + 1; i++) t[i] = 0;
		for (int x = s + 1; x >= 0; x--) {
			for (int y = 10; y >= 0; y--) {
				if (x - y >= 0) t[x] = (t[x] + v[x - y]) % M;
			}
		}
		for (int i = 0; i < s + 1; i++) v[i] = t[i];
		//for (long long l : v) cout<<l<<" ";
		//cout<<endl;
	}
	
	cout<<v[s]<<endl;
	
	return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED