#define _CRT_SECURE_NO_WARNINGS #define _USE_MATH_DEFINES #include #include #include #include #include #include #include #include #include #define REP(i,a,b) for(i=a;i> n; double rep = 1; rep(i,n) rep *= 3.0/4; printf("%.20lf\n",rep); return 0; }