View Compilation Error

0_0_6499201_25591\Main.java:26: cannot find symbol
symbol  : variable in
location: class Main
		int t=in.nextInt();
		      ^
0_0_6499201_25591\Main.java:28: cannot find symbol
symbol  : variable in
location: class Main
			n=in.nextInt();
			  ^
0_0_6499201_25591\Main.java:30: cannot find symbol
symbol  : variable in
location: class Main
				x[i]=in.nextDouble();
				     ^
0_0_6499201_25591\Main.java:31: cannot find symbol
symbol  : variable in
location: class Main
				w[i]=in.nextDouble();
				     ^
4 errors