QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#419082 | #5117. Find Maximum | reverSilly | TL | 3ms | 3720kb | C++23 | 1.4kb | 2024-05-23 17:39:54 | 2024-05-23 17:39:57 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
using i64=long long;
int f(int i)
{
if(i==0)
return 1;
if(i%3==0)
return f(i/3)+1;
return f(i-1)+1;
}
int log3(i64 x)
{
if(x==0)
return 1;
return log2(x)/log2(3)+1;
}
void itoa(i64 number,char *dest,int n){
stack<char> s;
if (number == 0)
{
s.push(0);
} else
{
while (number) {
s.push(number % n);
number /= n;
}
}
while (!s.empty())
{
*(dest++)=s.top();
// printf("%d", s.top());
s.pop();
}
*(dest++)=12;
}
i64 solve(i64 l,i64 r)
{
char l3[50],r3[50];
itoa(l,l3+log3(r)-log3(l),3);
itoa(r,r3,3);
fill_n(l3,log3(r)-log3(l),0);
for(int i=0;l3[i]!=12;++i)
{
if(r3[i]!=l3[i])
{
// cout<<(i==0&&r3[0]==1)<<'\n';
int ans=log3(r)-(i==0&&r3[0]==1)+accumulate(r3,r3+i+1,0)-1+(log3(r)-i-1)*2;
for(int i=1;i<50;++i)
{
if(r-i>=l)
ans=max(ans,f(r-i));
}
return ans;
}
}
return -1;
}
int T;
int main()
{
cin.tie(nullptr);
ios::sync_with_stdio(false);
// char ch[10];
// itoa(10,ch,3);
// cout<<ch;
// return 0;
// for(int i=0;i<200;++i)
// cout<<i<<' '<<f(i)<<'\n';
cin>>T;
while(T--)
{
i64 l,r;
cin>>l>>r;
cout<<solve(l,r+1)<<'\n';
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3720kb
input:
10 1 2 1 3 1 4 1 5 2 3 2 4 2 5 3 4 3 5 4 5
output:
3 3 4 5 3 4 5 4 5 5
result:
ok 10 numbers
Test #2:
score: 0
Accepted
time: 3ms
memory: 3680kb
input:
5050 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 1 20 1 21 1 22 1 23 1 24 1 25 1 26 1 27 1 28 1 29 1 30 1 31 1 32 1 33 1 34 1 35 1 36 1 37 1 38 1 39 1 40 1 41 1 42 1 43 1 44 1 45 1 46 1 47 1 48 1 49 1 50 1 51 1 52 1 53 1 54 1 55 1 56 1 57 1 58 1 59 1 60 1 61...
output:
2 3 3 4 5 5 5 6 6 6 6 6 6 7 7 7 8 8 8 8 8 8 8 8 8 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 10 10 10 10 10 10 10 10 10 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 3 3 4 5 5 5 6 6 6 6 6 6 7 7 7 8 8 8 8 8 8 8...
result:
ok 5050 numbers
Test #3:
score: -100
Time Limit Exceeded
input:
10000 2924776299390853 348932224550662831 638290869233943020 897334616745111026 210780034220004669 279345354637770906 20574264013277469 387573622060864735 39441497975868873 806211034038773415 19845198891021950 243636832211738144 298454268109304380 988142879006387197 613847475002049291 86666797163210...