#include<iostream>
#include<string>
using namespace std;
 
int main() {
	string text = "dls?d1:s45;=dd-96m0aA7";
	string temp = "";
	int sum = 0;
	for (int i = 0; i < text.size() + 1; ++i) {
		if (isdigit(text[i])) temp = temp + text[i];
		else {
			if (temp != "") {
				int number = stoi(temp);
				int pos = i - temp.size() - 1;
				if (pos >= 0)
					if (text[pos] == '-') number *= -1;
				sum += number;
				temp = "";
			}
		}
	}
	cout << sum << endl;
	return 0;
}

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