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#include <iostream> #include <algorithm> #include <vector> #include <cstring> using namespace std; int n,k; const int mod = 1e9 + 7; int a[105]; int memo[100005]; int main() { cin >> n >> k; for (int i = 0; i < n; i++) { cin >> a[i]; } memset(memo,0,sizeof(memo)); memo[0] = 1; // memo[i] - broj na nacini da stigneme so i candies for(int at = 0; at < n; at++) { for(int chocolates_left = k; chocolates_left >= 0; chocolates_left--) { int start = chocolates_left + 1; int end = chocolates_left + min(a[at], k - chocolates_left); for(int j = start; j <= end; j++) { memo[j] += memo[chocolates_left]; memo[j] %= mod; } } } cout << memo[k] << endl; return 0; } // min(1, )
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