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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 |
---|---|---|---|---|---|---|---|---|---|
#411333 | #6299. Binary String | crsfaa | WA | 159ms | 9900kb | C++14 | 3.0kb | 2024-05-15 11:40:15 | 2024-05-15 11:40:15 |
Judging History
answer
#include<bits/stdc++.h>
#define Yukinoshita namespace
#define Yukino std
using Yukinoshita Yukino;
int read()
{
int s=0,w=1;
char ch=getchar();
while(ch<'0'||ch>'9') w=ch=='-'?-1:1,ch=getchar();
while(ch>='0'&&ch<='9') s=s*10+ch-'0',ch=getchar();
return s*w;
}
const int mxn=1e7+5;
bool t[mxn],t2[mxn];
char s[mxn];
int pre[mxn];
struct seg
{
int l,r;
bool v;
int len()
{
return r-l+1;
}
};
int getp(int n,bool t[])
{
int i,j;
for(i=1;i<=n;i++)
if(n%i==0)
{
for(j=i;j<n;j++)
if(t[j]!=t[j-i])
goto bre;
return i;
bre:;
}
}
int main()
{
int T=read();
while(T--)
{
scanf("%s",s+1);
int n=strlen(s+1),i,j;
for(i=0;i<n;i++)
t[i]=s[i+1]-'0';
for(i=0;i<n;i++)
if(t[i]!=t[0])
goto bre;
puts("1");
continue;
bre:;
vector<seg> a;
for(i=0;i<n;i++)
if(t[i]!=t[1])
{
for(j=0;j<n;j++)
t2[j]=t[(j+i)%n];
memcpy(t,t2,n);
break;
}
for(i=0;i<n;i=j)
{
for(j=i;j<n&&t[j]==t[i];j++);
if(j>i+1)
a.push_back({i,j-1,t[i]});
}
int sum=0;
for(auto x:a)
if(x.v)
sum+=x.len()-1;
else sum-=x.len()-1;
if(sum<0)
{
for(auto &x:a)
x.v^=1,x.l=n-1-x.l,x.r=n-1-x.r,swap(x.l,x.r);
reverse(a.begin(),a.end());
}
// for(i=0;i<n;i++)
// cout<<t[i];
// puts("");
// for(auto x:a)
// cout<<x.l<<' '<<x.r<<' '<<x.v<<endl;
vector<int> pre{0};
for(auto x:a)
{
int v=(x.v?1:-1)*(x.r-x.l);
pre.push_back(pre.back()+v);
}
assert(pre.back()>=0);
pre.erase(pre.begin());
int mn=2e9;
for(i=0;i<pre.size();i++)
mn=min(mn,pre[i]);
for(i=0;i<pre.size();i++)
if(pre[i]==mn)
{
vector<seg> tp;
int lft=a[(i+1)%pre.size()].l;
for(j=0;j<pre.size();j++)
{
// cout<<':'<<j<<endl;
seg u=a[(i+1+j)%pre.size()];
tp.push_back({(u.l-lft+n)%n,(u.r-lft+n)%n,u.v});
}
a=tp;
break;
}
sum=0;
for(auto x:a)
{
if(x.v)
sum+=x.len()-1;
else sum-=x.len()-1;
assert(sum>=0);
// cout<<x.l<<' '<<x.r<<':'<<x.v<<endl;
}
// for(auto x:tp)
// {
//
// }
// for(auto x:a)
// cout<<x.l<<' '<<x.r<<'#'<<x.v<<endl;
// for(au)
int mx=0;
stack<seg> stk;
for(auto x:a)
{
if(x.v) stk.push(x);
else
{
int l=x.l,r=x.r,s=0;
for(;;)
{
assert(stk.size());
// cout<<l<<' '<<r<<':'<<stk.top().len()<<endl;
// if(!stk.size()) for(;;);
// assert(stk.size());
s+=(l-stk.top().r-1)/2;
r-=l-(stk.top().r+1);
l=stk.top().r+1;
// cout<<s<<':'<<l<<' '<<r<<endl;
if(stk.top().len()>=r-l+1)
{
mx=max(mx,s+r-l);
break;
}
s+=stk.top().len()-1;
r-=stk.top().len()-1;
l-=stk.top().len()-1,r-=stk.top().len()-1;
stk.pop();
}
}
}
// cout<<mx<<endl;
memset(t,0,n);
while(stk.size())
{
for(i=stk.top().l;i<=stk.top().r;i++)
t[i]=1;
stk.pop();
}
printf("%d\n",mx+getp(n,t));
}
}
/*
1
110100000000000000
*/
詳細信息
Test #1:
score: 100
Accepted
time: 2ms
memory: 9832kb
input:
3 1 001001 0001111
output:
1 3 9
result:
ok 3 number(s): "1 3 9"
Test #2:
score: -100
Wrong Answer
time: 159ms
memory: 9900kb
input:
262144 000000000000000000 100000000000000000 010000000000000000 110000000000000000 001000000000000000 101000000000000000 011000000000000000 111000000000000000 000100000000000000 100100000000000000 010100000000000000 110100000000000000 001100000000000000 101100000000000000 011100000000000000 11110000...
output:
1 18 18 19 18 18 19 20 18 18 18 20 19 19 20 21 18 18 18 19 18 18 20 21 19 19 19 20 20 20 21 22 18 18 18 19 18 18 19 21 18 18 18 21 20 20 21 22 19 19 19 19 19 19 20 21 20 20 20 21 21 21 22 23 18 18 18 19 18 18 19 20 18 18 18 20 19 19 21 22 18 18 18 19 18 18 21 22 20 20 20 21 21 21 22 23 19 19 19 19 1...
result:
wrong answer 28th numbers differ - expected: '21', found: '20'