求指教，请各位看看这道题，在国外孤立无援。
Question:
generate two different random integers, s and t, which are different for each message. s is called the start code and t is called the end code.
The value of t is transmitted as the first integer in the encoded output. Then for every integer i in the message, the integer s is sent followed by a
randomly generated sequence L of 1 or more integers that sum to i with the constraint that neither s nor t appears in the sequence.
The entire message is terminated by a single t value. For example, if the message is 3, 21, 5 and the start and end codes are 11 and -91, the message might be transmitted as -91, 11, -1, 5, 2, -3, 11, 21, 11, 4, 0, 1 , -91 (where 3 is represented as -1 + 5 + 2 - 3, 21 is represented as itself and 5 is represented as 4 + 0 + 1).
Non-functional requirements: your program may not use arrays!
Input
-91 11 -1 5 2 -3 11 21 11 4 0 1 -91
Output
3
21
5
Input
0 1 2 3 4 1 -1 -2 -3 0
output
9
-6
拜托各位帮帮忙吧，我人在澳洲，刚到这边，没几个会编程的朋友，大部分都是学商科的，这个是学校的作业，我实在是不太明白怎么做。只能求教于网络了。拜托大家.
[解决办法]
#include <stdio.h>int main(){ int startcode,endcode,nTmp,nRes; while(scanf("%d",&nTmp)!=EOF) { endcode = nTmp; scanf("%d",&startcode); nRes=0; while(scanf("%d",&nTmp)!=EOF) { if (nTmp==endcode) { printf("%d\n",nRes); break; } else if (nTmp==startcode ) { printf("%d\n",nRes); nRes=0; } else { nRes += nTmp; } } } return 0;}