0_0_34102174_13789.cpp: In instantiation of 'matrix<T, N>::matrix(const std::initializer_list<_Tp>&) [with T = int; long long unsigned int N = 4ull]':
0_0_34102174_13789.cpp:88:14: required from here
0_0_34102174_13789.cpp:28:46: error: array must be initialized with a brace-enclosed initializer
matrix<T, N>(const initializer_list<T> &l) {
^
0_0_34102174_13789.cpp: In instantiation of 'matrix<T, N>::matrix(int) [with T = int; long long unsigned int N = 4ull]':
0_0_34102174_13789.cpp:71:9: required from 'T power(T, long long int) [with T = matrix<int, 4ull>]'
0_0_34102174_13789.cpp:92:38: required from here
0_0_34102174_13789.cpp:21:27: error: array must be initialized with a brace-enclosed initializer
matrix<T, N>(int v = 0) {
^
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