#include <stdio.h>
#include <math.h>

int main(void) {
    int q=5;
    int k=10;
    int n=10;
    int x[10] = {1,2,3,4,5,6,7,8,9,10};
    int y[10] = {1,2,3,4,5,6,7,8,9,10};
    int i,j,d=1,im = 1,jm= 1;
    float dm = 0;
    for(i=0; i<k; i++)
  for(j=0; j<n; j++) {
    d = fabs(q - x[i] - y[j]);
    if ((i==0 && j==0) || d < dm) {
      dm = d;
      im = i;
      jm = j;
    }
  }
printf ("x[%d]+y[%d]=%f\n", im, jm, dm);
    return 0;
}