cf B. Simple Molecules

http://codeforces.com/contest/344/problem/B

#include <cstdio>
#include <cstring>
using namespace std;

int main()
{
    int a,b,c;
    int t1=0,t2=0,t3=0;
    while(scanf("%d%d%d",&a,&b,&c)!=EOF)
    {
        bool flag=false;
        for(int i=0; i<=a; i++)
        {
            t1=i;
            if(b-i>=0)
            {
                t2=b-i;
                if(c-(b-i)==a-i)
                {
                    flag=true;
                    t3=c-(b-i);
                    break;
                }
            }
        }
        if(flag)
        printf("%d %d %d
",t1,t2,t3);
        else
            printf("Impossible
");
    }
    return 0;
}