26 lines
450 B
C++
26 lines
450 B
C++
#include <bits/stdc++.h>
|
|
|
|
using namespace std;
|
|
|
|
ifstream in("test.in");
|
|
ofstream out("test.out");
|
|
|
|
|
|
int main() {
|
|
int sum = 0;
|
|
char prevSymbol = '+';
|
|
for (char symbol; in >> symbol;) {
|
|
if (symbol == prevSymbol) {
|
|
cout << "error" << endl;
|
|
return 0;
|
|
}
|
|
if (symbol != '+') {
|
|
sum += symbol - '0';
|
|
}
|
|
prevSymbol = symbol;
|
|
}
|
|
cout << sum << endl;
|
|
|
|
return 0;
|
|
}
|