bacT7 SIII 3

#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("bac.txt");

int main() {
    int x, sum, summax;
    fin >> x;
    sum = summax = x;
    while (fin >> x) {
        if (sum < 0) {
            sum += x;
        } else {
            sum = x;
        }
        if (sum < summax) {
            summax = sum;
        }
    }
    cout << summax << endl;
    return 0;
}