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- #include <iostream>
- #include <string>
- #include <cmath>
- using namespace std;
- int chislo (string s)
- {
- int result = 0;
- int size = s.size();
- int n;
- if (s[0] == '-')
- {
- for (int i = 1; i < size; i++)
- {
- n = pow(10, (size-i-1));
- result += (s[i] - 48)*n;
- }
- result = 0 - result;
- }
- else for (int i = 0; i < size; i++)
- {
- n = pow(10, (size-i-1));
- result += (s[i] - 48)*n;
- }
- return result;
- }
- int main()
- {
- string s;
- int znach;
- cin >> s;
- znach = chislo(s);
- cout << znach;
- }
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