- #include <bits/stdc++.h>
- using namespace std;
- #define N 1000006
- double LOG[N];
- int main(){
- for(int i = 1; i <N; i++){LOG[i] = log(i*1.00) + LOG[i-1];}
- int ts;
- cin>>ts;
- for(int k = 1; k <= ts; k++){
- int a, b;
- scanf("%d%d", &a, &b);
- printf("Case %d: %d\n",k, (int)(floor(LOG[a]/log(b*1.00))+1));
- }
- return 0;
- }
Thursday, 27 July 2017
Lightoj 1045 - Digits of Factorial
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