0_0_34102171_11934.cpp: In instantiation of 'matrix<T, N>::matrix(const std::initializer_list<_Tp>&) [with T = int; long long unsigned int N = 4ull]':
0_0_34102171_11934.cpp:89:13: required from here
0_0_34102171_11934.cpp:29:40: error: array must be initialized with a brace-enclosed initializer
matrix(const initializer_list<T> &l) {
^
0_0_34102171_11934.cpp: In instantiation of 'matrix<T, N>::matrix(int) [with T = int; long long unsigned int N = 4ull]':
0_0_34102171_11934.cpp:72:9: required from 'T power(T, long long int) [with T = matrix<int, 4ull>]'
0_0_34102171_11934.cpp:93:38: required from here
0_0_34102171_11934.cpp:22:21: error: array must be initialized with a brace-enclosed initializer
matrix(int v = 0) {
^
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