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11057-Exact_Sum.c
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11057-Exact_Sum.c
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#include<stdio.h>
int main()
{
int N;
while(scanf("%d", &N)!=EOF)
{
int arr[N];
int M;
int i, j, temp;
for(i=0; i<N; i++)
scanf("%d", &arr[i]);
scanf("%d", &M);
for(i=0; i<N; i++)
{
for(j=0; j<N-i-1; j++)
{
if(arr[j]>arr[j+1])
{
temp=arr[j];
arr[j]=arr[j+1];
arr[j+1]=temp;
}
}
}
int max=1000001;
int f_book, s_book;
for(i=0; i<N; i++)
{
for(j=i+1; j<N; j++)
{
if((arr[i]+arr[j])==M && abs(arr[i]-arr[j])<max)
{
f_book=arr[i];
s_book=arr[j];
}
}
}
printf("Peter should buy books whose prices are %d and %d.\n\n", f_book, s_book);
}
return 0;
}