int main() { string s,st; int n,k,l; cin >> n >> k >> s; int i = 97; while (k != 0) { st = ""; l = 0; while (l < n && k != 0) { if (s[l] != i) { st += s[l]; } else { k--; } ++l; } if (k != 0) { s = st; } n = s.length(); i++; } st = st + s.substr(l,n-l+1); cout << st; }
