CPP
cpp
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#include <iostream>
#include <string>
using namespace std;
string IntToStr(unsigned long long number)
{
string line="";
int digit;
char num=0;
while (number!=0)
{
digit = number % 10;
number /=10;
num = (char) (digit+48);
line = num+line;
}
return line;
}
unsigned long long StrToInt(string line)
{
unsigned long long number=0;
for (unsigned long i=0; i<line.length(); i++)
{
int digit = int(line[i]) - (int)'0';
number = number*10+digit;
}
return number;
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