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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 |
---|---|---|---|---|---|---|---|---|---|
#768316 | #9614. 分治 | zhouhuanyi | 100 ✓ | 2133ms | 53000kb | C++14 | 3.7kb | 2024-11-21 09:12:28 | 2024-11-21 09:12:28 |
Judging History
answer
#include<iostream>
#include<cstdio>
#include<cmath>
#include<vector>
#define N 400002
#define mod 998244353
using namespace std;
struct reads
{
int num,data;
};
string s;
int ps,F[N+1],delta[N+1],delta2[N+1],fac[N+1],invfac[N+1],pw2[N+1],sz,Base,ans;
vector<int>v[N+1];
vector<int>v2[N+1];
vector<reads>v3[N+1];
vector<reads>v4[N+1];
int fast_pow(int a,int b)
{
int res=1,mul=a;
while (b)
{
if (b&1) res=1ll*res*mul%mod;
mul=1ll*mul*mul%mod,b>>=1;
}
return res;
}
int C(int x,int y)
{
return 1ll*fac[x]*invfac[y]%mod*invfac[x-y]%mod;
}
int MD(int x)
{
return x>=mod?x-mod:x;
}
int MD2(int x)
{
return x<0?x+mod:x;
}
void Adder(int &x,int d)
{
x=x+d>=mod?x+d-mod:x+d;
return;
}
void Adder2(int &x,int d)
{
x=x+d<0?x+d+mod:x+d;
return;
}
int calc(int a,int n)
{
int d,res=0;
for (int i=0;(a+2)*i<=n;++i)
{
d=n-(a+2)*i;
if (!(i&1)) Adder(res,1ll*C(d+i,d)*pw2[d]%mod);
else Adder2(res,-1ll*C(d+i,d)*pw2[d]%mod);
}
return res;
}
int solve(int a,int b,int n)
{
int res=0;
Adder(res,calc(a,n));
if (n>=b+1) Adder2(res,-calc(a,n-b-1));
return res;
}
void get(int a,int b,int n)
{
Adder(ans,1ll*pw2[n]*(sz+1)%mod),a=max(a,b);
if (a<=Base) v[a].push_back(n),v2[a].push_back(n+b-1);
if (max(a,Base+1)+2<=n) v3[n/(max(a,Base+1)+2)].push_back((reads){max(a,Base+1),n});
if ((max(a,Base+1)<<1)+2<=n+b-1) v4[(n+b-1-max(a,Base+1))/(max(a,Base+1)+2)].push_back((reads){max(a,Base+1),n+b-1});
if (max(a,Base+1)<=sz-1) Adder2(ans,-1ll*(sz-max(a,Base+1))*pw2[n]%mod);
if (max(a,Base+1)<=min(sz-1,n+b-1)) Adder(ans,MD2(pw2[n+b-max(a,Base+1)]-pw2[n+b-1-min(sz-1,n+b-1)]));
return;
}
int main()
{
int d,maxn;
fac[0]=1;
for (int i=1;i<=N;++i) fac[i]=1ll*fac[i-1]*i%mod;
invfac[N]=fast_pow(fac[N],mod-2);
for (int i=N-1;i>=0;--i) invfac[i]=1ll*invfac[i+1]*(i+1)%mod;
pw2[0]=1;
for (int i=1;i<=N;++i) pw2[i]=2ll*pw2[i-1]%mod;
cin>>s,ans=1ll*pw2[s.length()-1]*s.length()%mod;
for (int i=0;i+1<s.length();++i) Adder2(ans,-solve(i,i,s.length()-1));
d=maxn=1,sz=s.length()+1,Base=sqrt(sz);
for (int i=1;i<s.length();++i)
{
if (s[i]=='1') get(maxn,d+1,s.length()-i-1),d=0;
else maxn=max(maxn,++d);
}
for (int i=Base;i>=0;--i)
{
F[0]=1;
for (int j=1;j<=(sz<<1)-i;++j) F[j]=j<=i+1?2ll*F[j-1]%mod:(2ll*F[j-1]-F[j-i-2]+mod)%mod;
for (int j=0;j<=(sz<<1)-i;++j) Adder(delta[j],F[j]),Adder(delta2[j+i],F[j]);
for (int j=0;j<v[i].size();++j) Adder2(ans,-delta[v[i][j]]);
for (int j=0;j<v2[i].size();++j) Adder(ans,delta2[v2[i][j]]);
}
for (int i=0;i<=sz;++i) delta[i]=pw2[i];
for (int i=1;i<=sz/(Base+3);++i)
{
for (int j=0;j<=sz;++j) delta[j]=1ll*delta[j]*(j+i)%mod,F[j]=delta[j];
for (int j=i;j<=sz;++j) Adder(F[j],F[j-i]);
if (!(i&1))
{
for (int j=i;j<=sz/(Base+3);++j)
for (int k=0;k<v3[j].size();++k)
Adder2(ans,-1ll*F[v3[j][k].data-(v3[j][k].num+2)*i]*invfac[i]%mod);
}
else
{
for (int j=i;j<=sz/(Base+3);++j)
for (int k=0;k<v3[j].size();++k)
Adder(ans,1ll*F[v3[j][k].data-(v3[j][k].num+2)*i]*invfac[i]%mod);
}
}
for (int i=0;i<=(sz<<1);++i) delta[i]=pw2[i];
for (int i=1;i<=(sz<<1)/(Base+3);++i)
{
for (int j=0;j<=(sz<<1);++j) delta[j]=1ll*delta[j]*(j+i)%mod,F[j]=delta[j];
for (int j=i+1;j<=(sz<<1);++j) Adder(F[j],F[j-i-1]);
if (!(i&1))
{
for (int j=i;j<=(sz<<1)/(Base+3);++j)
for (int k=0;k<v4[j].size();++k)
Adder(ans,1ll*F[v4[j][k].data-(v4[j][k].num+2)*i-v4[j][k].num]*invfac[i]%mod);
}
else
{
for (int j=i;j<=(sz<<1)/(Base+3);++j)
for (int k=0;k<v4[j].size();++k)
Adder2(ans,-1ll*F[v4[j][k].data-(v4[j][k].num+2)*i-v4[j][k].num]*invfac[i]%mod);
}
}
printf("%d\n",ans);
return 0;
}
詳細信息
Subtask #1:
score: 10
Accepted
Test #1:
score: 10
Accepted
time: 7ms
memory: 48252kb
input:
110
output:
15
result:
ok 1 number(s): "15"
Test #2:
score: 10
Accepted
time: 7ms
memory: 48416kb
input:
101
output:
12
result:
ok 1 number(s): "12"
Subtask #2:
score: 10
Accepted
Dependency #1:
100%
Accepted
Test #3:
score: 10
Accepted
time: 16ms
memory: 46628kb
input:
111110
output:
198
result:
ok 1 number(s): "198"
Test #4:
score: 10
Accepted
time: 17ms
memory: 49104kb
input:
1001001
output:
253
result:
ok 1 number(s): "253"
Subtask #3:
score: 20
Accepted
Dependency #2:
100%
Accepted
Test #5:
score: 20
Accepted
time: 14ms
memory: 49264kb
input:
10100011000100111
output:
386882
result:
ok 1 number(s): "386882"
Test #6:
score: 20
Accepted
time: 11ms
memory: 49144kb
input:
111010011111010110
output:
1107742
result:
ok 1 number(s): "1107742"
Subtask #4:
score: 5
Accepted
Test #7:
score: 5
Accepted
time: 13ms
memory: 48668kb
input:
100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
output:
412796008
result:
ok 1 number(s): "412796008"
Test #8:
score: 5
Accepted
time: 15ms
memory: 49652kb
input:
100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
output:
818656648
result:
ok 1 number(s): "818656648"
Subtask #5:
score: 5
Accepted
Dependency #3:
100%
Accepted
Dependency #4:
100%
Accepted
Test #9:
score: 5
Accepted
time: 11ms
memory: 47116kb
input:
10000000100000010010011110111101101110000000000001100000011000111111010011010101010000101001110110010001100110000110111101000101001111101111001010001001011101011111010000100010111100110000001101111
output:
703266161
result:
ok 1 number(s): "703266161"
Test #10:
score: 5
Accepted
time: 8ms
memory: 48160kb
input:
110100000100001000101000010010101000110111101010110000101001001100100111000011100101110110010000001111010011101001111110110010001110011101001111010101100100010011101010101111111111010110001100100110
output:
330527406
result:
ok 1 number(s): "330527406"
Subtask #6:
score: 5
Accepted
Dependency #4:
100%
Accepted
Test #11:
score: 5
Accepted
time: 7ms
memory: 48664kb
input:
100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
output:
340672883
result:
ok 1 number(s): "340672883"
Test #12:
score: 5
Accepted
time: 8ms
memory: 48352kb
input:
100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
output:
555946758
result:
ok 1 number(s): "555946758"
Subtask #7:
score: 10
Accepted
Dependency #5:
100%
Accepted
Dependency #6:
100%
Accepted
Test #13:
score: 10
Accepted
time: 12ms
memory: 50004kb
input:
110011100110101000000110101010111111001101101011010110100100110010111110110110000111011001110000101111110111011111000110001011011011101100001100100011010010111111010110010000101001001000100001100100000001000111110100000101001011100001100011011110110101101111110011100111001010001010001111001110111100...
output:
324123594
result:
ok 1 number(s): "324123594"
Test #14:
score: 10
Accepted
time: 12ms
memory: 49576kb
input:
110100110100110110001011100000011010000010000101100100001101100100110000101000111001111100001110001001101010110010111101000100111010001011001110101010001101111010000011000010110011000011100101110100000001011100111000101111010100001101011010100101110000010001101001000100111001101101110000101101011011...
output:
209285599
result:
ok 1 number(s): "209285599"
Subtask #8:
score: 10
Accepted
Dependency #6:
100%
Accepted
Test #15:
score: 10
Accepted
time: 738ms
memory: 50144kb
input:
100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
output:
468567454
result:
ok 1 number(s): "468567454"
Test #16:
score: 10
Accepted
time: 1612ms
memory: 50840kb
input:
100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
output:
12752860
result:
ok 1 number(s): "12752860"
Subtask #9:
score: 25
Accepted
Dependency #1:
100%
Accepted
Dependency #2:
100%
Accepted
Dependency #3:
100%
Accepted
Dependency #4:
100%
Accepted
Dependency #5:
100%
Accepted
Dependency #6:
100%
Accepted
Dependency #7:
100%
Accepted
Dependency #8:
100%
Accepted
Test #17:
score: 25
Accepted
time: 2133ms
memory: 53000kb
input:
101100010100101011010110001111101101001010000111001111000100110110010111101100011011011111010110000000011110000010100110111110110001101001101101001110101110011000010100100101000011000010000101011001011011000000100111011110100010000100001101011110100101110000100011000101100000111111100110000111010000...
output:
711712397
result:
ok 1 number(s): "711712397"
Test #18:
score: 25
Accepted
time: 1972ms
memory: 52852kb
input:
110101110100100010101100000110000110101101111100110011100111111110000101111001101001111000110111100111110111010001000010111111110000001001011110101110001011010010010011101000110110000110110101000100111000100110101111011101111101000010000101001001000010011011000011001100111111011000111000010000100111...
output:
171668334
result:
ok 1 number(s): "171668334"
Test #19:
score: 25
Accepted
time: 1882ms
memory: 50848kb
input:
100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
output:
397846555
result:
ok 1 number(s): "397846555"
Test #20:
score: 25
Accepted
time: 1706ms
memory: 51980kb
input:
100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000...
output:
592103795
result:
ok 1 number(s): "592103795"
Extra Test:
score: 0
Extra Test Passed