Submission #1091890

#	Time	Username	Problem	Language	Result	Execution time	Memory
1091890		plagia	Savrsen (COCI17_savrsen)	C++14	30 / 120	252 ms	39768 KiB

savrsen

    #include <cstdlib>
    #include <iostream>
     
    const int MM = 1e7 + 10;
    int tab[MM]{};
     
    void fill_tab() {
      	for (int i = 1; i < MM; i++) {
          tab[i] = 0;
        }
      
    	for (int i = 1; i * i <= MM; i++) {
    		for (int j = i * 2; j < MM; j += i) {
    			tab[j] += i;	
    		}
    	}
    }
     
    int calculate_imperfection(const int &n) {
    	return std::abs(n - tab[n]);
    }
     
    int main() {
    	std::ios_base::sync_with_stdio(0);
     
    	fill_tab();
     
    	int a, b;
    	std::cin >> a >> b;
    	
    	unsigned long long sum = 0;
    	for (int i = a; i <= b; i++) {
    		sum += calculate_imperfection(i);
    	}
     
    	std::cout << sum << std::endl;
     
    	return 0;
    }

• Subtask 1: 30 / 120