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#include <iostream> using namespace std; int main() { int a; cin >> a; if ((a / 1000) - (a % 10) == (((a / 100) % 10) + (a / 10) % 10)) { cout << "YES"; } else { cout << "NO"; } }
#include <iostream> using namespace std; int main() { int a; cin >> a; if ((a / 1000) - (a % 10) == (((a / 100) % 10) + (a / 10) % 10)) { cout << "YES"; } else { cout << "NO"; } }