/home/toolbox/public_html/solutions/3/324/b.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
13 #define DEBUG if (FALSE)
14
15 /*
16 * Author: Isaac Traxler
17 * Date: 2021-01-28
18 * Purpose: fun
19 * Problem: 305 Joseph
20 */
21
22 /*
23 * This template reads data until a terminating value is reached.
24 */
25
26 #define MAX_NUM 15
27 #define MAXX 30
28
29 int buf[MAXX];
30 int k;
31
32
33 void init(int x)
34 {
35 /* FUNCTION init */
36 int i;
37
38 for (i=0; i<x; i++)
39 {
40 buf[i] = i + 1;
41 }
42 } /* FUNCTION init */
43
44 void dump(int t)
45 {
46 /* FUNCTION dump */
47 int i;
48
49 for (i=0; i<t; i++)
50 {
51 printf("%d ", buf[i]);
52 }
53 printf("\n");
54 } /* FUNCTION dump */
55
56 int getInput()
57 {
58 /* FUNCTION getInput */
59 int dataReadFlag;
60 scanf(" %d ", &k);
61 dataReadFlag = 0 < k;
62 return (dataReadFlag);
63 } /* FUNCTION getInput */
64
65 int allGood(int t)
66 {
67 /* FUNCTION allGood */
68 int i;
69 int tot;
70 int good = FALSE;
71
72 tot = 0;
73 for (i=0; i<k; i++)
74 {
75 /* for good */
76 if (0 < buf[i])
77 {
78 tot = tot + 1;
79 }
80 } /* for good */
81 if (k == tot)
82 {
83 /* check that all bad are dead */
84 tot = 0;
85 for (i=k; i<t; i++)
86 {
87 /* for bad */
88 if (0 == buf[i])
89 {
90 tot = tot + 1;
91 }
92 } /* for bad */
93 good = (k == tot);
94 } /* check that all bad are dead */
95 return good;
96 } /* FUNCTION allGood */
97
98 int testIt(int v, int t)
99 {
100 /* FUNCTION testIt */
101 int i;
102 int p;
103 int x;
104 int good;
105 int peopleLeft;
106
107 peopleLeft = t;
108 p = ((v - 1 + t)% t);
109 for (i=0; i<k; i++)
110 {
111 /* kill k times */
112 buf[p] = 0;
113 peopleLeft = peopleLeft - 1;
114 DEBUG printf("Killing %d\n", p + 1);
115 x = 1;
116 while (x <= v)
117 {
118 /* while */
119 p = (p + 1) % t;
120 if (0 < buf[p])
121 {
122 /* found a live person */
123 x = x + 1;
124 DEBUG printf("Skipping %d\n", p + 1);
125 } /* found a live person */
126 } /* while */
127 if (p < k)
128 {
129 i = k;
130 }
131 } /* kill k times */
132 good = allGood(t);
133 } /* FUNCTION testIt */
134
135 void process()
136 {
137 /* FUNCTION process */
138 int t;
139 int i;
140 int failed = TRUE;
141 int tst;
142
143 printf("process %d\n", k);
144 t = k * 2;
145 tst = k;
146 while (failed)
147 {
148 /* while */
149 tst = tst + 1;
150 DEBUG printf("testing %d\n", tst);
151 init(t);
152 DEBUG dump(t);
153 failed = ! testIt(tst, t);
154 DEBUG dump(t);
155 } /* while */
156 printf("%d\n", tst);
157 } /* FUNCTION process */
158
159 int main()
160 {
161 /* main */
162 int moreToDo;
163
164 moreToDo = getInput();
165 while (moreToDo)
166 {
167 /* while */
168 process();
169 moreToDo = getInput();
170 } /* while */
171
172 return EXIT_SUCCESS;
173 } /* main */
174