Submission #994314

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Source Code Expand

            #include <bits/stdc++.h>
            #include<iostream>
            #include<cstdio>
            #include<vector>
            #include<queue>
            #include<map>
            #include<cstring>
            #include<string>
            #include <math.h>
            #include<algorithm>
        //    #include <boost/multiprecision/cpp_int.hpp>
            #include<functional>
          #define int long long
            #define inf  1000000007
            #define pa pair<int,int>
    #define ll long long
            #define pal pair<ll,ll>
            #define ppa pair<int,pa>
            #define  mp make_pair
            #define  pb push_back
            #define EPS (1e-10)
            #define equals(a,b) (fabs((a)-(b))<EPS)
     
            using namespace std;
     
            class Point{
            	public:
            	double x,y;
            	Point(double x=0,double y=0):x(x),y(y) {}
            	Point operator + (Point p) {return Point(x+p.x,y+p.y);}
            	Point operator - (Point p) {return Point(x-p.x,y-p.y);}
            	Point operator * (double a) {return Point(x*a,y*a);}
            	Point operator / (double a) {return Point(x/a,y/a);}
            	double absv() {return sqrt(norm());}
            	double norm() {return x*x+y*y;}
            	bool operator < (const Point &p) const{
            		return x != p.x ? x<p.x: y<p.y;
            	}
            	bool operator == (const Point &p) const{
            		return fabs(x-p.x)<EPS && fabs(y-p.y)<EPS;
            	}
            };
            typedef Point Vector;
     
            struct Segment{
            Point p1,p2;
            };
     
        double hen(Vector a){
        if(fabs(a.x)<EPS && a.y>0) return acos(0);
        else if(fabs(a.x)<EPS && a.y<0) return 3*acos(0);
        else if(fabs(a.y)<EPS && a.x<0) return 2*acos(0);
        else if(fabs(a.y)<EPS && a.x>0) return 0.0;
        else if(a.y>0) return acos(a.x/a.absv());
        else return 2*acos(0)+acos(-a.x/a.absv());
     
        }
     
int gcd(int v,int b){
	if(v>b) return gcd(b,v);
	if(v==b) return b;
	if(b%v==0) return v;
	return gcd(v,b%v);
}
            double dot(Vector a,Vector b){
            	return a.x*b.x+a.y*b.y;
            }
            double cross(Vector a,Vector b){
            	return a.x*b.y-a.y*b.x;
            }
        
            //----------------kokomade tenpure------------
map<int ,int> timez;

int a,n;
int saiki(int d){//d ni toutatu suru saisyou jikan
	if(timez.find(d)!=timez.end()) return timez[d];
	int u=d;
	int z;
	for(int l=2;l<=100;l++){
		 z= d/l;
		if(d%l!=0) z++;
		if(z==1) continue;
		u=min(u,saiki(z)+a+1+l-1);
	}	
	/*
	for(int i=1;i<=z;i++){
		int l=d/z;
		if(d%z!=0) l++;
		
		u=min(u,saiki(z)+a+1+l-1);
	}
	*/
	timez[d]=u;
	return u;
	
}

    signed main(){

    cin>>n>>a;
    //	if(n>1000002) return 0;
    //	for(int i=0;i<1000002;i++) timez[i]=-1;
    	timez[0]=0;
    	timez[1]=1;
    	timez[2]=2;
    	int z;
    	/*
    	for(int i=1;i<=n;i++){
    		 z=saiki(i);
    	//	cout<<z<<endl;
    		
    	}
    	cout<<z<<endl;
    	*/
    	cout<<saiki(n)<<endl;
    	
    //	printf("%.10f\n",ans);
    	return 0;
    }

Submission Info

Judge Result