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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. using namespace std;
  5.  
  6. int mostCommonSum(const vector<int>& a) {
  7.   int sum = 0;
  8.   for(auto num: a) {
  9.     sum += num;
  10.   }
  11.   vector<int> dp(sum + 1);
  12.   dp[0] = 1;
  13.   sum = 0;
  14.   for (int i = 0; i < (int)a.size(); i++) {
  15.     sum += a[i];
  16.     for(int j = sum; j >= 0; j--) {
  17.       if (j - a[i] >= 0) {
  18.         dp[j] += dp[j - a[i]];
  19.       }
  20.     }
  21.   }
  22.   int maxFrequency = -1;
  23.   int mostFrequentSum = -1;
  24.   for (int i = 0; i <= sum; i++) {
  25.     if (dp[i] >= maxFrequency) {
  26.       maxFrequency = dp[i];
  27.       mostFrequentSum = i;
  28.     }
  29.   }
  30.   return mostFrequentSum;
  31. }
  32.  
  33. int main()
  34. {
  35.   vector<int> a = {2, 4, 6, 8};
  36.   cout << mostCommonSum(a);
  37.  
  38.   return 0;
  39. }
Success #stdin #stdout 0s 15232KB
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stdin 
Standard input is empty
stdout 
14
https://ideone.com/7iZrEH
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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