Where is the Ghost

Discussions Toph Problems
1

The ghost exploration team find some 1D coordinate where the cursed object is located. You will be g…

Click here to read the complete problem statement.

If you need help solving this problem, mention your approach and ask specific questions. Please avoid sharing your code and asking the Community to figure out “what’s wrong”.

2 
#include <bits/stdc++.h>
using namespace std;

using i64 = long long;
i64 const &N = 2520; 
i64 const &mod = 1E9 + 7;

void Solution() {
    i64 n;
    cin >> n;
    i64 _array[n];
    for (auto & x: _array) {
        cin >> x;
    }
    vector < i64 > dp(N, 0);
    dp[1] = 1;
    for (int i = 0; i < n; ++ i) {
        i64 x = _array[i];
        vector < i64 > dp_new = dp;
        for (i64 num = 1; num < N; ++ num) {
            i64 rem = (num * x) % N;
            dp_new[rem] += dp[num]; dp_new[rem] = dp_new[rem] % mod;
        }
        dp = dp_new;
    }
    cout << dp[0] << "\n";
    return ;
}

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    
    int T;
    T = 1;

    while (T --) {
        Solution();
    }

    return 0;
}


what is wrong here ?