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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#419044 | #5117. Find Maximum | reverSilly | WA | 1ms | 3884kb | C++23 | 1.2kb | 2024-05-23 17:15:48 | 2024-05-23 17:15:50 |
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';
return log3(r)-(i==0&&r3[0]==1)+accumulate(r3,r3+i+1,0)-1+(log3(r)-i-1)*2;
}
}
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: 0
Wrong Answer
time: 1ms
memory: 3884kb
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 3 5 3 3 5 4 5 5
result:
wrong answer 3rd numbers differ - expected: '4', found: '3'