http://acm.pku.edu.cn/JudgeOnline/problem?id=1079
Код:
#include<stdio.h> #include<math.h> int main() { int i,j,k1,k2,a,b,m=0; double r,t1,t2,rn; while(scanf("%d %d",&a,&b)==2) { if(m)printf("\n"); r=(double)a/b; j=0;rn=r;j++; k1=(int)floor(r*j);k2=(int)ceil(r*j); t1=(double)k1/j;t2=(double)k2/j; if(fabs(t1-rn)<fabs(t2-rn)) {printf("%d/%d\n",k1,j);rn=fabs(t1-r);} else {printf("%d/%d\n",k2,j);rn=fabs(t2-r);} j++; while(j<=b) { k1=(int)floor(r*j);k2=(int)ceil(r*j); t1=(double)k1/j;t2=(double)k2/j; if(fabs(t1-rn)<fabs(t2-rn)&&fabs(t1-r)<rn) {printf("%d/%d\n",k1,j);rn=fabs(t1-r);} else if(fabs(t2-r)<rn) {printf("%d/%d\n",k2,j);rn=fabs(t2-r);} j++;} m++; } return 0; }