/in/foo.cc: In function 'int main()':
/in/foo.cc:9:28: error: '\U0000ff1b' was not declared in this scope
    9 |     for (i = 0; i < 2; i++)；
      |                            ^~
/in/foo.cc:16:28: error: '\U0000ff1b' was not declared in this scope
   16 |     for (i = 0; i < 3; i++)；
      |                            ^~
/in/foo.cc:24:28: error: '\U0000ff1b' was not declared in this scope
   24 |     for (i = 0; i < 3; i++)；
      |                            ^~
/in/foo.cc:5:9: warning: unused variable 'a' [-Wunused-variable]
    5 |     int a[2][3];
      |         ^
/in/foo.cc:6:9: warning: unused variable 'b' [-Wunused-variable]
    6 |     int b[3][2];
      |         ^
/in/foo.cc:7:12: warning: unused variable 'j' [-Wunused-variable]
    7 |     int i, j;
      |            ^