提交时间:2022-07-20 12:16:22

运行 ID: 52934

#include<bits/stdc++.h> #pragma GCC optimize(3) #pragma GCC optimize("Ofast") #pragma GCC optimize("inline") #pragma GCC optimize("-fgcse") #pragma GCC optimize("-fgcse-lm") #pragma GCC optimize("-fipa-sra") #pragma GCC optimize("-ftree-pre") #pragma GCC optimize("-ftree-vrp") #pragma GCC optimize("-fpeephole2") #pragma GCC optimize("-ffast-math") #pragma GCC optimize("-fsched-spec") #pragma GCC optimize("unroll-loops") #pragma GCC optimize("-falign-jumps") #pragma GCC optimize("-falign-loops") #pragma GCC optimize("-falign-labels") #pragma GCC optimize("-fdevirtualize") #pragma GCC optimize("-fcaller-saves") #pragma GCC optimize("-fcrossjumping") #pragma GCC optimize("-fthread-jumps") #pragma GCC optimize("-funroll-loops") #pragma GCC optimize("-fwhole-program") #pragma GCC optimize("-freorder-blocks") #pragma GCC optimize("-fschedule-insns") #pragma GCC optimize("inline-functions") #pragma GCC optimize("-ftree-tail-merge") #pragma GCC optimize("-fschedule-insns2") #pragma GCC optimize("-fstrict-aliasing") #pragma GCC optimize("-fstrict-overflow") #pragma GCC optimize("-falign-functions") #pragma GCC optimize("-fcse-skip-blocks") #pragma GCC optimize("-fcse-follow-jumps") #pragma GCC optimize("-fsched-interblock") #pragma GCC optimize("-fpartial-inlining") #pragma GCC optimize("no-stack-protector") #pragma GCC optimize("-freorder-functions") #pragma GCC optimize("-findirect-inlining") #pragma GCC optimize("-frerun-cse-after-loop") #pragma GCC optimize("inline-small-functions") #pragma GCC optimize("-finline-small-functions") #pragma GCC optimize("-ftree-switch-conversion") #pragma GCC optimize("-foptimize-sibling-calls") #pragma GCC optimize("-fexpensive-optimizations") #pragma GCC optimize("-funsafe-loop-optimizations") #pragma GCC optimize("inline-functions-called-once") #pragma GCC optimize("-fdelete-null-pointer-checks") using namespace std; const long long mod=1e9+7; int n,m,k,ans,a[5001],p[5001]; long long pows(long long x){ if(p[x]){ return p[x]; } if(x==0){ return 0; } if(x==1){ return 1; } long long sum=1,y=m; while(y){ if(y&1){ sum=sum*x%mod; } x=x*x%mod,y>>=1; } return p[x]=sum; } void dfs(int x){ cout<<x<<endl; if(n==0){ return; } if(x==k){ cout<<'!'<<endl; if(n>=a[x-1]){ a[x]=n; for(int i=1;i<=x;i++){ int y=pows(a[i]); ans=(ans+y)%mod; } } return; } for(int i=a[x-1];i<=n/(k-x+1);i++){ a[x]=i,n-=i,dfs(x+1),n+=i; } } int main(){ cin>>n>>k>>m; a[0]=1,dfs(1); cout<<ans<<endl; return 0; }