#include <iostream> using namespace std; int main() { int A[20], result = A[0], i; for (i = 1; i <= 20; i++) A[i] = rand() % 10; for (i = 1; i <= 20; i++) { if (i % 2 == 0) result += A[i+1]; else result -= A[i+1]; } cout << result; return 0; }