28 lines
650 B
C
28 lines
650 B
C
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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int input[] = {5,1,8,6,9,2,44,3,31,26,36,47,51,72,88,7,4};
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int N=sizeof(input)/sizeof(int);
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int K = 10;
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void print_pair(int *input,int K) {
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int *mem=alloca(sizeof(int)*K);
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int t,i;
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memset(mem,0,sizeof(int)*K);
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for(t=0;t<N;t++) {
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i=input[t];
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if (i<=0 || i>=K) continue;
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if (mem[K-i]!=0) {
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printf("%d %d\n",i,K-i);
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mem[K-i]=0;
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} else
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mem[i]=1;
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}
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}
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int main() {
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print_pair(input,K);
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return 0;
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}
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