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#include <stdio.h>
#include <stdlib.h>
typedef unsigned uint;
struct Vec {
size_t cap, len;
uint *ptr;
};
static struct Vec new(size_t cap) {
struct Vec vec = { cap };
vec.ptr = malloc(sizeof(*vec.ptr) * cap);
return vec;
}
static void push(struct Vec *vec, uint val) {
if (vec->len == vec->cap) {
vec->cap *= 2;
vec->ptr = realloc(vec->ptr, sizeof(*vec->ptr) * vec->cap);
}
vec->ptr[vec->len++] = val;
}
int main() {
uint count;
scanf("%u", &count);
struct Vec vec = new(256);
push(&vec, 3);
push(&vec, 7);
size_t elf[2] = { 0, 1 };
for (uint i = 0; i < count + 10; ++i) {
uint sum = vec.ptr[elf[0]] + vec.ptr[elf[1]];
if (sum / 10) push(&vec, sum / 10);
push(&vec, sum % 10);
elf[0] = (elf[0] + 1 + vec.ptr[elf[0]]) % vec.len;
elf[1] = (elf[1] + 1 + vec.ptr[elf[1]]) % vec.len;
}
for (uint i = count; i < count + 10; ++i) {
printf("%u", vec.ptr[i]);
}
printf("\n");
}
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