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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#419108 | #5117. Find Maximum | reverSilly | WA | 1ms | 3964kb | C++23 | 2.1kb | 2024-05-23 17:56:43 | 2024-05-23 17:56:44 |
Judging History
answer
#include<bits/stdc++.h>
#define dbg //cerr<<__PRETTY_FUNCTION__<<' '<<__LINE__<<'\n'
using namespace std;
using i64=long long;
constexpr int LIM{100000};
int cache[LIM];
int f(i64 i)
{
if(i<LIM&&cache[i]!=-1)
return cache[i];
int ans;
if(i==0)
ans=1;
else if(i%3==0)
ans=f(i/3)+1;
else
ans=f(i-1)+1;
if(i<LIM)
cache[i]=ans;
return ans;
}
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[55],r3[55];
itoa(l,l3+log3(r)-log3(l),3);
itoa(r,r3,3);
fill_n(l3,log3(r)-log3(l),0);
dbg;
// for(int i=0;l3[i]!=12;++i)
// cout<<(char)(l3[i]+'0');
// cout<<'\n';
// for(int i=0;r3[i]!=12;++i)
// cout<<(char)(r3[i]+'0');
// cout<<'\n';//2101000201022101010212021100000112101
int ans=-1;
for(int i=0;l3[i]!=12;++i)
{
dbg;
if(r3[i]!=l3[i])
{
dbg;
// cout<<(i==0&&r3[0]==1)<<'\n';
ans=max(ans,log3(r)-(i==0&&r3[0]==1)+accumulate(r3,r3+i+1,0)-1+(log3(r)-i-1)*2);
dbg;
// for(int i=1;i<20;++i)
// {
// if(r-i>=l)
// ans=max(ans,f(r-i));
// }
dbg;
}
}
dbg;
return ans;
}
int T;
int main()
{
// f(279345354637770906ll);
// return 0;
cin.tie(nullptr);
ios::sync_with_stdio(false);
fill_n(cache,LIM,-1);
dbg;
// 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--)
{
dbg;
i64 l,r;
cin>>l>>r;
cout<<solve(l,r+1)<<'\n';
}
return 0;
}
詳細信息
Test #1:
score: 0
Wrong Answer
time: 1ms
memory: 3964kb
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 3 5 4 5 5
result:
wrong answer 6th numbers differ - expected: '4', found: '3'