import std.algorithm, std.array, std.container, std.range; import std.numeric, std.math, std.bigint, std.bitmanip, std.random; import std.string, std.conv, std.stdio, std.typecons; void main() { auto rd = readln.split.map!(to!int); auto n = rd[0], k = rd[1] - 1; auto s = readln.chomp; auto a = 0; if (s[k] == '(') { foreach (i; k..n) { a += s[i] == '(' ? +1 : -1; if (a == 0) writeln(i + 1); } } else { foreach_reverse (i; 0..k + 1) { a += s[i] == ')' ? +1 : -1; if (a == 0) writeln(i + 1); } } }