#include int main() { int N; scanf(" %d", &N); if (N <= 10) { printf("%d\n", 7); } else if (N <= 30) { printf("%d\n", 7 + (N - 10)); } else if (N <= 100) { printf("%d\n", 27 + 2 * (N - 30)); } else { printf("%d\n", 167 + 5 * (N - 100)); } return 0; }