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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#117457 | #6299. Binary String | Kostlin | TL | 4ms | 17932kb | C++14 | 3.9kb | 2023-07-01 11:26:42 | 2023-07-01 11:26:45 |
Judging History
answer
#include <cstdio>
#include <iostream>
#include <algorithm>
#include <cstring>
#include <assert.h>
using namespace std;
typedef long long ll;
#define fi first
#define sc second
#define mkp make_pair
#define pii pair<int,int>
const int N=1e7+5;
inline int read() {
int x=0,flag=0;char ch=getchar();
while(ch<'0'||ch>'9') {flag|=(ch=='-');ch=getchar();}
while('0'<=ch&&ch<='9') {x=(x<<3)+(x<<1)+ch-'0';ch=getchar();}
return flag?-x:x;
}
inline int mx(int x,int y) {return x>y?x:y;}
inline int mn(int x,int y) {return x<y?x:y;}
inline void swp(int &x,int &y) {x^=y^=x^=y;}
inline int as(int x) {return x>=0?x:-x;}
int n,a[N],b[N],c[N],S[N],P[N],L[N],cnt,nqwq[N],ans1,ans2,fuck[N],fuc[N]; char s[N],ok[N];
bool vis[N];
inline int nxt(int x) {
if(x==b[0]) return 1;
else return x+1;
}
inline int Nxt(int x) {
if(x==cnt) return 1;
else return x+1;
}
int main() {
int TT=read();
while(TT--) {ans1=1;ans2=0;
scanf("%s",s+1); n=strlen(s+1);
if(n==1) {printf("1\n");continue;}
int t0=0,t1=0;
for(int i=1;i<=n;++i) t0+=(s[i]=='0'),t1+=(s[i]=='1');
if(!t0||!t1) {printf("1\n");continue;}
if(t0<t1) {
swp(t0,t1);
reverse(s+1,s+n+1);
for(int i=1;i<=n;++i) s[i]=(s[i]=='0'?'1':'0');
}
int mpos=0;
for(int i=1;i<=n;++i)
if(s[i]=='0'&&s[(i>1?i-1:n)]=='1') {
mpos=i;break;
}
for(int i=mpos;i<=n;++i) a[++a[0]]=s[i]-'0';
for(int i=1;i<mpos;++i) a[++a[0]]=s[i]-'0';
for(int i=1,pos;i<=n;i=pos) {
pos=i+1;
while(pos<=n&&a[pos]==1) ++pos;
b[++b[0]]=pos-i-1;
}
bool fl=0;
for(int i=1;i<=b[0];++i) {
if(!b[i]||b[i==1?b[0]:i-1]) continue;
fl=1;
int now=i,sum=0;
while(b[now]) sum+=b[now],now=nxt(now);
++cnt; S[cnt]=sum-1; P[cnt]=i;
}
if(!fl) {printf("2\n");continue;}
if(cnt>1) {
P[cnt+1]=P[1];
for(int i=1;i<=cnt;++i) {
int pos=P[i];L[i]=0;
while(pos!=P[i+1]) ++L[i],pos=nxt(pos);
}
// for(int i=1;i<=cnt;++i) printf("%d %d\n",S[i],L[i]);
for(int i=1;i<=cnt;++i) {
if(vis[i]||S[i==1?cnt:i-1]>=L[i==1?cnt:i-1]) continue;
ok[i]=1;
int sum=S[i],Sum=S[i]+1,now=i,op=0;
while(sum>=L[now]) {++op;
sum-=L[now]; sum+=S[Nxt(now)]+1; Sum+=S[Nxt(now)]+1;
vis[now=Nxt(now)]=1;
}
fuck[Nxt(now)]=L[now]-sum,fuc[i]=Sum;
now=P[i];
while(b[now]==1) {
--Sum;
now=nxt(now);
}
ans1=mx(ans1,Sum);
}
for(int i=1;i<=cnt;++i)
if(ok[i]) {
for(int j=1;j<=fuck[i];++j) c[++c[0]]=0;
for(int j=1;j<=fuc[i];++j) c[++c[0]]=1,c[++c[0]]=0;
--c[0];
}
} else {
int now=P[1];ans1=S[1]+1;
while(b[now]==1) --ans1,now=nxt(now);
ans1=mx(ans1,1);
for(int i=1;i<=S[1]+1;++i) c[++c[0]]=1,c[++c[0]]=0;
for(int i=1;i<=n-(S[1]+1)*2;++i) c[++c[0]]=0;
}
// assert(c[0]==n);
// cerr<<c[0]<<endl;
// for(int i=1;i<=c[0];++i) printf("%d",c[i]);
// printf("\n");
int j=0; nqwq[1]=0;
for(int i=2;i<=n;++i) {
while(j&&c[j+1]!=c[i]) j=nqwq[j];
if(c[j+1]==c[i]) ++j;
nqwq[i]=j;
}
if(n%(n-nqwq[n])==0) ans2=n-nqwq[n];
else ans2=n;
printf("%d\n",ans1+ans2-1);
for(int i=1;i<=n;++i) vis[i]=0,ok[i]=0;
a[0]=b[0]=c[0]=cnt=0;
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 4ms
memory: 17932kb
input:
3 1 001001 0001111
output:
1 3 9
result:
ok 3 number(s): "1 3 9"
Test #2:
score: -100
Time Limit Exceeded
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 21 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 21 22 20 20 20 22 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 22 21 21 22 23 19 19 19 19 1...