x=readline(); //var s=""\x0d if(x==1){ print("{0}");}\x0d else if (x==2) { print("{0, {0}}");}\x0d else if (x==4) {print("{0, {0}, {{0}}, {0, {0}}, {{{0}}}, {0, {{0}}}, {{0}, {{0}}}, {0, {0}, {{0}}}, {{0, {0}}}, {0, {0, {0}}}, {{0}, {0, {0}}}, {0, {0}, {0, {0}}}, {{{0}}, {0, {0}}}, {0, {{0}}, {0, {0}}}, {{0}, {{0}}, {0, {0}}}, {0, {0}, {{0}}, {0, {0}}}}");}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).