/**
* code generated by JHelper
* More info: https://g...content-available-to-author-only...b.com/AlexeyDmitriev/JHelper
* @author RiaD
*/
#include <iostream>
#include <fstream>
#include <iostream>
#include <cassert>
#include <vector>
#include <algorithm>
#include <iterator>
#include <string>
#include <stdexcept>
#ifndef SPCPPL_ASSERT
#ifdef SPCPPL_DEBUG
#define SPCPPL_ASSERT(condition) \
if(!(condition)) { \
throw std::runtime_error(std::string() + #condition + " in line " + std::to_string(__LINE__) + " in " + __PRETTY_FUNCTION__); \
}
#else
#define SPCPPL_ASSERT(condition)
#endif
#endif
/**
* Support decrementing and multi-passing, but not declared bidirectional(or even forward) because
* it's reference type is not a reference.
*
* It doesn't return reference because
* 1. Anyway it'll not satisfy requirement [forward.iterators]/6
* If a and b are both dereferenceable, then a == b if and only if *a and
* b are bound to the same object.
* 2. It'll not work with reverse_iterator that returns operator * of temporary which is temporary for this iterator
*
* Note, reverse_iterator is not guaranteed to work now too since it works only with bidirectional iterators,
* but it's seems to work at least on my implementation.
*
* It's not really useful anywhere except iterating anyway.
*/
template <typename T>
class IntegerIterator {
public:
using value_type = T;
using difference_type = std::ptrdiff_t;
using pointer = T*;
using reference = T;
using iterator_category = std::input_iterator_tag;
explicit IntegerIterator(T value): value(value) {
}
IntegerIterator& operator++() {
++value;
return *this;
}
IntegerIterator operator++(int) {
IntegerIterator copy = *this;
++value;
return copy;
}
IntegerIterator& operator--() {
--value;
return *this;
}
IntegerIterator operator--(int) {
IntegerIterator copy = *this;
--value;
return copy;
}
T operator*() const {
return value;
}
bool operator==(IntegerIterator rhs) const {
return value == rhs.value;
}
bool operator!=(IntegerIterator rhs) const {
return !(*this == rhs);
}
private:
T value;
};
template <typename T>
class IntegerRange {
public:
IntegerRange(T begin, T end): begin_(begin), end_(end) {
SPCPPL_ASSERT(begin <= end);
}
IntegerIterator<T> begin() const {
return IntegerIterator<T>(begin_);
}
IntegerIterator<T> end() const {
return IntegerIterator<T>(end_);
}
private:
T begin_;
T end_;
};
template <typename T>
class ReversedIntegerRange {
using IteratorType = std::reverse_iterator<IntegerIterator<T>>;
public:
ReversedIntegerRange(T begin, T end): begin_(begin), end_(end) {
SPCPPL_ASSERT(begin >= end);
}
IteratorType begin() const {
return IteratorType(IntegerIterator<T>(begin_));
}
IteratorType end() const {
return IteratorType(IntegerIterator<T>(end_));
}
private:
T begin_;
T end_;
};
template <typename T>
IntegerRange<T> range(T to) {
return IntegerRange<T>(0, to);
}
template <typename T>
IntegerRange<T> range(T from, T to) {
return IntegerRange<T>(from, to);
}
template <typename T>
IntegerRange<T> inclusiveRange(T to) {
return IntegerRange<T>(0, to + 1);
}
template <typename T>
IntegerRange<T> inclusiveRange(T from, T to) {
return IntegerRange<T>(from, to + 1);
}
template <typename T>
ReversedIntegerRange<T> downrange(T from) {
return ReversedIntegerRange<T>(from, 0);
}
template <typename T>
ReversedIntegerRange<T> downrange(T from, T to) {
return ReversedIntegerRange<T>(from, to);
}
template <typename T>
ReversedIntegerRange<T> inclusiveDownrange(T from) {
return ReversedIntegerRange<T>(from + 1, 0);
}
template <typename T>
ReversedIntegerRange<T> inclusiveDownrange(T from, T to) {
return ReversedIntegerRange<T>(from + 1, to);
}
//#define PROBLEM "problem_name.h"
//#include PROBLEM
//#include <message.h>
//#include <spcppl/dgcj.h>
using namespace std;
class E3SortirovkaSliyaniem {
public:
static constexpr int kStressCount = 0;
static void generateTest(std::ostream& test) {
}
void solve(std::istream& in, std::ostream& out) {
//static int testnumber = 0;
//out << "Case #" << ++testnumber << ": ";
//cerr << "test " << testnumber << endl;
string s;
in >> s;
int ptr = 0;
auto go = [&](auto& go, int l, int r) {
if (r - l <= 1) {
return;
}
int m = (l + r) >> 1;
go(go, l, m);
go(go, m, r);
int cnt0 = 0;
int cnt1 = 0;
while (cnt0 < m - l && cnt1 < r - m) {
if (ptr == s.size()) {
throw 1;
}
if (s[ptr++] == '0') {
++cnt0;
}
else {
++cnt1;
}
}
};
vector<int> a;
vector<int> b;
auto res = [&](auto& go, int l, int r) {
if (r - l <= 1) {
return;
}
int m = (l + r) >> 1;
go(go, l, m);
go(go, m, r);
int i = l;
int j = m;
int k = l;
while (i < m and j < r) {
assert(ptr != s.size());
if (s[ptr++] == '0') {
b[k++] = a[i++];
}
else {
b[k++] = a[j++];
}
}
while (i < m) {
b[k++] = a[i++];
}
while (j < r) {
b[k++] = a[j++];
}
for (int i: range(l, r)) {
a[i] = b[i];
}
};
int l = 1, r = 100000;
while (l <= r) {
int m = (l + r) / 2;
try {
ptr = 0;
go(go, 0, m);
}
catch (int) {
r = m - 1;
continue;
}
if (ptr == s.size()) {
int i = m;
out << i << "\n";
a.resize(i);
b.resize(i);
for (int j: range(i)) {
a[j] = j;
}
ptr = 0;
res(res, 0, i);
vector<int> c(a.size());
for (int t: range(a.size())) {
b[a[t]] = t;
}
for (int x: b) {
out << x + 1 << " ";
}
return;
}
l = m + 1;
}
}
};
int main() {
std::ios_base::sync_with_stdio(false);
E3SortirovkaSliyaniem solver;
std::istream& in(std::cin);
std::ostream& out(std::cout);
in.tie(nullptr);
out << std::fixed;
out.precision(20);
solver.solve(in, out);
return 0;
}