/in/foo.c: In function 'main':
/in/foo.c:34:31: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
                     if(0 == i && 0 == j || 0 == nums[i-1][j-1]){
                        ~~~~~~~^~~~~~~~~
/in/foo.c:67:31: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
                     if(0 == i && 0 == j || 0 == nums[i-1][j-1]){
                        ~~~~~~~^~~~~~~~~