Accepted
/in/foo.cc: In function 'int main()': /in/foo.cc:9:12: warning: unused variable 'j' [-Wunused-variable] int n, i, j, sum, q, x1, x2, y1, y2; ^
/in/foo.cc: In function 'int main()': /in/foo.cc:9:12: warning: unused variable 'j' [-Wunused-variable] int n, i, j, sum, q, x1, x2, y1, y2; ^