func_code_string: #include <bits/stdc++.h>   using namespace std;   void sol();   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     int n, k;     cin >> n >> k;     long long ml = 1, ans = 0;     vector<int> ls(n);     map<long long, int> pre, mp;     mp[0] = 1;     vector<long long> an;     while (ml < 1e15) {       if (!pre[ml])         an.push_back(ml), pre[ml] = 1;       else         break;       ml *= k;       if ((ml > 1e15 || -ml > 1e15) || (ml % k != 0)) break;     }     for (int &x : ls) cin >> x;     long long sm = 0ll;     for (int x : ls) {       sm += x;       for (long long y : an)         if (mp[sm - y]) ans += mp[sm - y];       mp[sm]++;     }     cout << ans;   }   