/home/toolbox/public_html/solutions/101/10137/d.c
1 #include <stdio.h>
2 #include <string.h>
3 #include <sys/types.h>
4 #include <sys/stat.h>
5 #include <fcntl.h>
6 #include <stdint.h>
7 #include <math.h>
8 #include <stdlib.h>
9
10 #define TRUE (1 == 1)
11 #define FALSE (1 != 1)
12 #define DEBUG if (FALSE)
13
14 unsigned long money[1000];
15 unsigned long total;
16 unsigned long numStudents;
17
18 unsigned long getInput()
19 {
20 /* BEGIN FUNCTION getInput */
21 unsigned long i;
22 double m;
23 unsigned long rc = 0;
24
25 scanf("%d ", &numStudents);
26 if (0 < numStudents)
27 {
28 total = 0;
29 rc = 1;
30 for (i = 0; i < numStudents; i++)
31 {
32 scanf("%lf ", &m);
33 money[i] = (unsigned long)((m * 100) + 0.5);
34 total += money[i];
35 }
36 }
37 return(rc);
38 } /* END FUNCTION getInput */
39
40 void process()
41 {
42 /* BEGIN FUNCTION process */
43 unsigned long avg;
44 unsigned long remainder;
45 unsigned long i;
46 unsigned long changeHands = 0;
47
48 avg = total / (unsigned long) numStudents;
49 remainder = total % numStudents;
50
51 for (i=0; i<numStudents; i++)
52 {
53 /* for */
54 if (avg < money[i])
55 {
56 /* take some money */
57 if (0 < remainder)
58 {
59 /* remainder left */
60 changeHands = changeHands + money[i] - (avg + 1);
61 remainder --;
62 } /* remainder left */
63 else
64 {
65 /* no remainder left */
66 changeHands = changeHands + money[i] - avg;
67 } /* no remainder left */
68 } /* take some money */
69 } /* for */
70 printf("$%ld.%02d\n", changeHands/100, changeHands%100);
71 } /* END FUNCTION process */
72
73 int main ()
74 {
75 /* main */
76 int moreToDo;
77
78 /*init(); */
79 moreToDo = getInput();
80 while (moreToDo)
81 {
82 /* while */
83 DEBUG printf("\n numStudents [%d] ", numStudents);
84 DEBUG printf(" total [%ld]\n", total);
85 process();
86 moreToDo = getInput();
87 } /* while */
88
89 return EXIT_SUCCESS;
90 } /* main */
91