dp:
#include<bits/stdc++.h> using namespace std; typedef unsigned int ui; typedef long long ll; typedef unsigned long long ull; #define pf printf #define mem(a,b) memset(a,b,sizeof(a)) #define prime1 1e9+7 #define prime2 1e9+9 #define pi 3.14159265 #define lson l,mid,rt<<1 #define rson mid+1,r,rt<<1|1 #define scand(x) scanf("%llf",&x) #define f(i,a,b) for(int i=a;i<=b;i++) #define scan(a) scanf("%d",&a) #define mp(a,b) make_pair((a),(b)) #define P pair<int,int> #define dbg(args) cout<<#args<<":"<<args<<endl; #define inf 0x7ffffff inline int read(){ int ans=0,w=1; char ch=getchar(); while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();} while(isdigit(ch))ans=(ans<<3)+(ans<<1)+ch-'0',ch=getchar(); return ans*w; } int n,m,t; const int maxn=150; const ll mod=10000; ll dp[maxn+1][maxn+1]; int main() { // freopen("input.txt","r",stdin); // freopen("output.txt","w",stdout); std::ios::sync_with_stdio(false); f(i,1,maxn) f(j,1,maxn){ if(i==1||j==1)dp[i][j]=1; else if(i==j)dp[i][j]=dp[i][j-1]+1; else if(i<j)dp[i][j]=dp[i][i]; else dp[i][j]=dp[i-j][j]+dp[i][j-1]; } while(scanf("%d",&n)!=EOF){ pf("%lld\n",dp[n][n]); } }
母函数:
#include<bits/stdc++.h> using namespace std; typedef unsigned int ui; typedef long long ll; typedef unsigned long long ull; #define pf printf #define mem(a,b) memset(a,b,sizeof(a)) #define prime1 1e9+7 #define prime2 1e9+9 #define pi 3.14159265 #define lson l,mid,rt<<1 #define rson mid+1,r,rt<<1|1 #define scand(x) scanf("%llf",&x) #define f(i,a,b) for(int i=a;i<=b;i++) #define scan(a) scanf("%d",&a) #define mp(a,b) make_pair((a),(b)) #define P pair<int,int> #define dbg(args) cout<<#args<<":"<<args<<endl; #define inf 0x7ffffff inline int read(){ int ans=0,w=1; char ch=getchar(); while(!isdigit(ch)){if(ch=='-')w=-1;ch=getchar();} while(isdigit(ch))ans=(ans<<3)+(ans<<1)+ch-'0',ch=getchar(); return ans*w; } int n,m,t; const int maxn=150; const ll mod=10000; ll c1[maxn],c2[maxn]; int main() { // freopen("input.txt","r",stdin); // freopen("output.txt","w",stdout); std::ios::sync_with_stdio(false); f(i,0,maxn-1) { c1[i]=1,c2[i]=0; } for(int k=2;k<maxn;k++){ for(int i=0;i<maxn;i++){ for(int j=0;j+i<maxn;j+=k){ c2[i+j]+=c1[i]; } } for(int i=0;i<maxn;i++){ c1[i]=c2[i],c2[i]=0; } } while(scanf("%d",&n)!=EOF){ pf("%lld\n",c1[n]); } }