``` #include <iostream> using namespace std; #include<bits> #include<vector> vector<int>v; int sum = 0; int main() { int table[3][4] = { {1,2,3,4},{2,3,4,5},{3,4,5,6} }; for (int i = 0; i < 3; i++) { for (int j = 0; j < 4; j++) { int x = table[i][j]; v.push_back(x); } } printf("Sum of row 1 is %d\n", accumulate(v.begin(),v.begin()+4,0)); printf("Sum of row 2 is %d\n", accumulate(v.begin()+4, v.begin() + 8, 0)); printf("Sum of row 3 is %d\n", accumulate(v.begin()+8, v.begin() + 12, 0)); return 0; } ```</int></vector></bits></iostream>