Submission #2205179
Source Code Expand
#include<bits/stdc++.h> #define REP(i,n) for(int i=0;i<n;i++) #define LOOP(i,x,n) for(int i=x;i<n;i++) #define ALL(v) (v).begin(),(v).end() #define PB push_back #define MP make_pair #define F first #define S second #define int long long using namespace std; const int MOD=1000000007; const int INF=1000000000; const double eps=1e-10; bool Is_Prime(int n){ if(n==1) return false; else if(n==2)return true; else if(n%2==0)return false; for(int i=3;i*i<=n;i+=2){ if(n%i==0)return false; } return true; } map<int,int> prime_fac(int n){ map<int,int> ret; for(int i=2;i*i<=n;i++){ while(n%i==0){ ret[i]++; n/=i; } } if(n!=1)ret[n]=1; return ret; } signed main(){ int n; cin>>n; map<int,int> mp; LOOP(i,2,n+1){ if(Is_Prime(i))mp[i]++; else{ map<int,int> p=prime_fac(i); for(auto x:p){ mp[x.F]+=x.S; } } } int ans=1; for(auto x:mp){ //cout<<x.F<<' '<<x.S<<endl; ans*=(x.S+1); ans%=MOD; } cout<<ans<<endl; return 0; }
Submission Info
Submission Time | |
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Task | C - Factors of Factorial |
User | fuu32 |
Language | C++14 (GCC 5.4.1) |
Score | 300 |
Code Size | 1088 Byte |
Status | AC |
Exec Time | 1 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 300 / 300 | ||||
Status |
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Set Name | Test Cases |
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Sample | sample_01.txt, sample_02.txt, sample_03.txt |
All | sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_certain_01.txt, subtask_1_certain_02.txt, subtask_1_certain_03.txt, subtask_1_certain_04.txt, subtask_1_rand_01.txt, subtask_1_rand_02.txt, subtask_1_rand_03.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
sample_01.txt | AC | 1 ms | 256 KB |
sample_02.txt | AC | 1 ms | 256 KB |
sample_03.txt | AC | 1 ms | 256 KB |
subtask_1_certain_01.txt | AC | 1 ms | 256 KB |
subtask_1_certain_02.txt | AC | 1 ms | 256 KB |
subtask_1_certain_03.txt | AC | 1 ms | 256 KB |
subtask_1_certain_04.txt | AC | 1 ms | 256 KB |
subtask_1_rand_01.txt | AC | 1 ms | 256 KB |
subtask_1_rand_02.txt | AC | 1 ms | 256 KB |
subtask_1_rand_03.txt | AC | 1 ms | 256 KB |