#include <iostream>
#include <memory.h>
#include <map>
#include <string>
#include <functional>
#include <vector>
using namespace std;
typedef long long ll;
const ll mod = 10000000;
ll n, k;
ll fa(ll a)
{
if (a == 0)
return 1;
ll res = 1;
for (ll i = 1; i <= a; i++)
res =(res* i)%mod;
return res;
}
ll po(ll a)
{
if (k == 0)
return 1;
ll res = 1;
for (int i = 0; i < k; i++)
res = (res * a)%mod;
return res;
}
int main() {
cin >> n >> k;
ll res = 0;
for (ll i = 0; i <= n; i++)
res = res + (po(fa(i)));
while (1)
{
if (res == 0)
return 0;
else if (res % 10 != 0) {
cout << res % 10 << endl;
return 0;
}
res = res / 10;
}
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
248 KB |
answer is '4' |
| 2 |
Correct |
1 ms |
352 KB |
answer is '2' |
| 3 |
Correct |
2 ms |
424 KB |
answer is '2' |
| 4 |
Correct |
2 ms |
424 KB |
answer is '2' |
| 5 |
Correct |
2 ms |
460 KB |
answer is '2' |
| 6 |
Correct |
2 ms |
604 KB |
answer is '4' |
| 7 |
Correct |
1 ms |
604 KB |
answer is '6' |
| 8 |
Correct |
1 ms |
604 KB |
answer is '1' |
| 9 |
Correct |
1 ms |
604 KB |
answer is '2' |
| 10 |
Correct |
1 ms |
604 KB |
answer is '6' |
| 11 |
Correct |
1 ms |
604 KB |
answer is '4' |
| 12 |
Correct |
1 ms |
620 KB |
answer is '5' |
| 13 |
Correct |
2 ms |
620 KB |
answer is '2' |
| 14 |
Correct |
1 ms |
620 KB |
answer is '3' |
| 15 |
Correct |
1 ms |
620 KB |
answer is '4' |
| 16 |
Correct |
2 ms |
620 KB |
answer is '5' |
| 17 |
Correct |
1 ms |
620 KB |
answer is '6' |
| 18 |
Correct |
1 ms |
620 KB |
answer is '7' |
| 19 |
Correct |
1 ms |
620 KB |
answer is '8' |
| 20 |
Correct |
2 ms |
620 KB |
answer is '9' |
| 21 |
Correct |
1 ms |
620 KB |
answer is '1' |
| 22 |
Correct |
1 ms |
620 KB |
answer is '6' |
| 23 |
Correct |
2 ms |
620 KB |
answer is '3' |
| 24 |
Correct |
1 ms |
620 KB |
answer is '7' |
| 25 |
Correct |
1 ms |
620 KB |
answer is '3' |
| 26 |
Correct |
1 ms |
620 KB |
answer is '1' |
| 27 |
Correct |
1 ms |
620 KB |
answer is '2' |
| 28 |
Correct |
2 ms |
620 KB |
answer is '1' |
| 29 |
Correct |
1 ms |
620 KB |
answer is '1' |
| 30 |
Correct |
2 ms |
620 KB |
answer is '1' |
| 31 |
Correct |
1 ms |
620 KB |
answer is '4' |
| 32 |
Correct |
1 ms |
620 KB |
answer is '4' |
| 33 |
Correct |
2 ms |
620 KB |
answer is '4' |
| 34 |
Correct |
1 ms |
620 KB |
answer is '4' |
| 35 |
Correct |
2 ms |
620 KB |
answer is '4' |
| 36 |
Correct |
1 ms |
620 KB |
answer is '4' |
| 37 |
Correct |
1 ms |
620 KB |
answer is '4' |
| 38 |
Correct |
2 ms |
620 KB |
answer is '4' |
| 39 |
Correct |
1 ms |
620 KB |
answer is '4' |
| 40 |
Correct |
1 ms |
620 KB |
answer is '8' |
| 41 |
Correct |
2 ms |
620 KB |
answer is '8' |
| 42 |
Correct |
1 ms |
620 KB |
answer is '8' |
| 43 |
Correct |
2 ms |
620 KB |
answer is '8' |
| 44 |
Correct |
2 ms |
656 KB |
answer is '8' |
| 45 |
Correct |
2 ms |
656 KB |
answer is '8' |
| 46 |
Correct |
2 ms |
696 KB |
answer is '8' |
| 47 |
Correct |
2 ms |
696 KB |
answer is '8' |
| 48 |
Correct |
2 ms |
696 KB |
answer is '8' |
| 49 |
Correct |
1 ms |
696 KB |
answer is '5' |
| 50 |
Correct |
2 ms |
696 KB |
answer is '5' |
| 51 |
Correct |
2 ms |
696 KB |
answer is '5' |
| 52 |
Correct |
1 ms |
696 KB |
answer is '5' |
| 53 |
Correct |
2 ms |
696 KB |
answer is '5' |
| 54 |
Correct |
1 ms |
696 KB |
answer is '5' |
| 55 |
Correct |
1 ms |
696 KB |
answer is '5' |
| 56 |
Correct |
1 ms |
696 KB |
answer is '5' |
| 57 |
Correct |
1 ms |
696 KB |
answer is '5' |
