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#include <iostream>
int sumN = 5;
int mulN = 3;
int solve(int input) {
int result = 0;
if (input == 1) {
return 1;
}
if (input > 0 && input % mulN == 0) {
result = solve(input / mulN);
}
if (!result) {
if (input > sumN) {
result = solve(input - sumN);
}
}
return result;
}
int main() {
int input;
std::cin >> input;
while (input != 0) {
if (solve(input))
std::cout << "SI\n";
else
std::cout << "NO\n";
std::cin >> input;
}
return 0;
}
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