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#include <iostream>
using namespace std;
template<int N, int M>
unique_ptr<string[]> func(string (&A)[N][M], short (&B)[N][M]) {
auto arr = unique_ptr<string[]>(new string[N]);
for(int i = 0; i < N; ++i) {
short sum{0};
string tmp{""};
for(int j = 0; j < M; ++j) {
sum+=B[i][j];
tmp+=A[i][j];
}
arr[i] = tmp.length() >= sum ? tmp : "";
}
return arr;
}
int main() {
string A[2][3] = {
{"aab", "aA", "314"},
{"1334", "5715", "__"},
};
short B[2][3] = {
{2, 3, 0},
{1, 15, 7}
};
auto x = func(A, B);
for(int i = 0; i < 2; ++i)
cout << x[i] << ' ';
cout << endl;
return 0;
}
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