Compilare: user.cpp: In function ‘int main()’: user.cpp:86:7: warning: unused variable ‘a4’ [-Wunused-variable] int a4 = dp[min_i][min_j][l - 1]; ^~ user.cpp:88:54: warning: ‘min_j’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (a1 == dp[min_i][min_j][l] - mat[min_i][min_j][l]) { ~~~~~~~~~~~~~~~~~~~^ user.cpp:88:54: warning: ‘min_i’ may be used uninitialized in this function [-Wmaybe-uninitialized]