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为什么有C++就AC,别的就EA#include<stdio.h> #include<math.h> double Angle(int x,int y) {double pi=3.14159265358979323846; double angle; double r=sqrt(x*x+y*y); if (y>=0) { angle=acos(x/r); } else { angle=2*pi-acos(x/r); } angle=angle/pi*180; return angle; } void swap(double &a,double &b) { double buf; buf=a; a=b; b=buf; } int main() {int t,r,x1,y1,x2,y2,x3,y3,flag; double angle[4]; scanf("%d",&t); while(t--) {scanf("%d%d%d%d%d%d%d",&r,&x1,&y1,&x2,&y2,&x3,&y3); flag=1; // if(x1==0&&y1==0||x2==0&&y2==0||x3==0&&y3==0)flag=0; //else{ angle[1]=Angle(x1,y1); angle[2]=Angle(x2,y2); angle[3]=Angle(x3,y3); if (angle[2]<angle[1]) swap(angle[1],angle[2]); if (angle[3]<angle[1]) swap(angle[1],angle[3]); if (angle[2]>angle[3]) swap(angle[2],angle[3]); if (angle[1]>angle[3]) swap(angle[1],angle[3]); // qsort(angle,3,sizeof(double),fun); // printf("%lf %lf %lf\n",angle[1],angle[2],angle[3]); if(angle[3]-angle[1]<=120)flag=0; if(angle[2]+360-angle[3]<=120)flag=0; if(angle[1]+360-angle[2]<=120)flag=0; //} if(flag)printf("Yes\n"); else printf("No\n"); } } Followed by: Post your reply here: |
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