0_0_39254202_21767.cpp: In function 'int main()':
0_0_39254202_21767.cpp:6:5: error: 'scanf' was not declared in this scope
6 | scanf("%d", &n);
| ^~~~~
0_0_39254202_21767.cpp:8:34: error: 'fabs' was not declared in this scope
8 | printf("%.2f\n", (t=asin(fabs(x[0]*y[1]-x[1]*y[0])/sqrt(x[0]*x[0]+y[0]*y[0])/sqrt(x[1]*x[1]+y[1]*y[1]))/acos(-1)*180)?x[0]*x[1]<=0&&y[0]*y[1]<=0?180-t:t:x[0]*x[1]<0?180:0);
| ^~~~
0_0_39254202_21767.cpp:8:60: error: 'sqrt' was not declared in this scope
8 | printf("%.2f\n", (t=asin(fabs(x[0]*y[1]-x[1]*y[0])/sqrt(x[0]*x[0]+y[0]*y[0])/sqrt(x[1]*x[1]+y[1]*y[1]))/acos(-1)*180)?x[0]*x[1]<=0&&y[0]*y[1]<=0?180-t:t:x[0]*x[1]<0?180:0);
| ^~~~
0_0_39254202_21767.cpp:8:29: error: 'asin' was not declared in this scope
8 | printf("%.2f\n", (t=asin(fabs(x[0]*y[1]-x[1]*y[0])/sqrt(x[0]*x[0]+y[0]*y[0])/sqrt(x[1]*x[1]+y[1]*y[1]))/acos(-1)*180)?x[0]*x[1]<=0&&y[0]*y[1]<=0?180-t:t:x[0]*x[1]<0?180:0);
| ^~~~
0_0_39254202_21767.cpp:8:113: error: 'acos' was not declared in this scope
8 | printf("%.2f\n", (t=asin(fabs(x[0]*y[1]-x[1]*y[0])/sqrt(x[0]*x[0]+y[0]*y[0])/sqrt(x[1]*x[1]+y[1]*y[1]))/acos(-1)*180)?x[0]*x[1]<=0&&y[0]*y[1]<=0?180-t:t:x[0]*x[1]<0?180:0);
| ^~~~
0_0_39254202_21767.cpp:8:9: error: 'printf' was not declared in this scope
8 | printf("%.2f\n", (t=asin(fabs(x[0]*y[1]-x[1]*y[0])/sqrt(x[0]*x[0]+y[0]*y[0])/sqrt(x[1]*x[1]+y[1]*y[1]))/acos(-1)*180)?x[0]*x[1]<=0&&y[0]*y[1]<=0?180-t:t:x[0]*x[1]<0?180:0);
| ^~~~~~
0_0_39254202_21767.cpp:1:1: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
+++ |+#include <cstdio>
1 | int main(void)
|
