This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
string checkbit(int i){
return "((A&(1<<"+to_string(i)+"))>>"+to_string(i)+")";
}
string bitshift(int i){
return "(1<<"+to_string(i)+")";
}
string getmaxint(int n){
return "((1<<"+to_string(n)+")-1)";
}
int f1(int a,int i){
return ((a&(1<<i))>>i);
}
int f2(int i){
return (1<<i);
}
int f3(int i){
return ((1<<i)-1);
}
int main(){
int n,k;
cin >> n >> k;
if (k*4 >= n){
cout << (n+3)/4 << "\n";
for (int i = 0; i < n; i+= 4){
string add = checkbit(i),sub="("+getmaxint(n)+"-"+bitshift(i)+")";
for (int j = i+1; j < min(i+4,n); j++){
add = "("+add+"+"+checkbit(j)+")";
sub = "("+sub+"-"+bitshift(j)+")";
}
sub = "(A&"+sub+")";
string finalString = "A=("+add+"+"+sub+")";
cout << finalString << "\n";
}
}
else{
//for (int a = 4; a < (1<<n); a++){
int numboxes = n,boxsize = 1;
//int temp = a;
//cout << temp << "hi\n";
int val = 0,tempn = n;
while (tempn != 1){
val++;
tempn = (tempn+1)/2;
}
cout << val << "\n";
while (numboxes != 1){
string bigbox = "0",smallbox = "0";
int addto = 0;
int num = 0;
//int bigval = 0,smallval = 0;
for (int i = 0; i < n; i++){
num++;
if (num > boxsize){
num-=boxsize;
addto = 1-addto;
}
if (addto){
//bigval += f2(i);
bigbox = "("+bigbox+"+"+bitshift(i)+")";
}
else{
//smallval += f2(i);
smallbox = "("+smallbox+"+"+bitshift(i)+")";
}
}
string finalstring = "A=(((A&"+bigbox+")>>"+to_string(boxsize)+")+(A&"+smallbox+"))";
assert(finalstring.length() <= 1000);
cout << finalstring << "\n";
//temp = ((temp&bigval)>>boxsize)+(temp&smallval);
numboxes = (numboxes+1)/2;
boxsize *= 2;
}
//if (temp != __builtin_popcount(a)) cout << "hi\n";
//}
}
}
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