10824번: 네 수

#include<cstdio>

long long combine(long long q, long long w)

{

long long ten;

for (ten = 1000000; w / ten == 0; ten /= 10);

ten *= 10;

return (q*ten) + w;

}

int main()

{

long long a, b, c, d;

scanf("%lld %lld %lld %lld", &a, &b, &c, &d);

a = combine(a, b);

c = combine(c, d);

printf("%lld", a + c);

}