/home/toolbox/public_html/solutions/127/12751/a.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 <stdlib.h>
7 #include <math.h>
8 #include <stdint.h>
9
10 #define TRUE (1 == 1)
11 #define FALSE (1 != 1)
12
13 #define DEBUG if (FALSE)
14
15 /* fprintf(stderr, "functionName: message", varslist); */
16
17 /*
18 * Author: Isaac Traxler
19 * Date: 2015-09-29
20 * Purpose: fun
21 * Problem: 12751
22 */
23
24 /*
25 * This template reads data a specified number of times.
26 */
27
28 int numberOfTimes;
29 int N;
30 int K;
31 int X;
32
33 void init()
34 {
35 /* FUNCTION init */
36 scanf("%d ", &numberOfTimes);
37 } /* FUNCTION init */
38
39 void dump()
40 {
41 /* FUNCTION dump */
42 } /* FUNCTION dump */
43
44 void getInput()
45 {
46 /* FUNCTION getInput */
47 scanf(" %d %d %d ", &N, &K, &X);
48 } /* FUNCTION getInput */
49
50 int calc(int i)
51 {
52 /* FUNCTION calc */
53 return (((i + 1) * i) / 2);
54 } /* FUNCTION calc */
55
56 void process()
57 {
58 /* FUNCTION process */
59 int total;
60 /*
61 sum(N) - sum(X+K-1) + sum(X)
62 */
63 DEBUG printf("calc(%d) = %d\n", N, calc(N));
64 DEBUG printf("calc(%d) = %d\n", X+K-1, calc(X+K-1));
65 DEBUG printf("calc(%d) = %d\n", X-1, calc(X-1));
66 total = calc(N) - calc(X+K-1) + calc(X-1);
67 printf("%d\n", total);
68 } /* FUNCTION process */
69
70 int main()
71 {
72 /* main */
73 int i;
74
75 init();
76 for (i=1; i<=numberOfTimes; i++)
77 {
78 /* while */
79 getInput();
80 printf("Case %d: ", i);
81 process();
82 } /* while */
83
84 return EXIT_SUCCESS;
85 } /* main */
86
87