#include<bits/stdc++.h> using namespace std; typedef pair<int,int> PI; typedef long long LL; typedef double D; #define FI first #define SE second #define MP make_pair #define PB push_back #define R(I,N) for(int I=0;I<N;I++) #define F(I,A,B) for(int I=A;I<B;I++) #define FD(I,N) for(int I=N-1;I>=0;I--) #define make(A) scanf("%d",&A) #define make2(A,B) scanf("%d%d",&A,&B) #define ALL(x) (x).begin(), (x).end() #define SZ(x) ((int)(x).size()) #define db if(1)printf template<typename C> void MA(C& a,C b){if(a<b)a=b;} template<typename C> void MI(C& a,C b){if(a>b)a=b;} LL a,b,k; int sum(LL a){ if(a == 0)return 0; return sum(a/10) + (a%10)*(a%10); } main(){ scanf("%lld%lld%lld",&k,&a,&b); int wyn = 0; F(i,1,1500){ if(b/i >= k){ LL pom = k*i; if(a <= pom && pom <= b && sum(pom) == i)wyn++; } } printf("%d\n",wyn); }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | #include<bits/stdc++.h> using namespace std; typedef pair<int,int> PI; typedef long long LL; typedef double D; #define FI first #define SE second #define MP make_pair #define PB push_back #define R(I,N) for(int I=0;I<N;I++) #define F(I,A,B) for(int I=A;I<B;I++) #define FD(I,N) for(int I=N-1;I>=0;I--) #define make(A) scanf("%d",&A) #define make2(A,B) scanf("%d%d",&A,&B) #define ALL(x) (x).begin(), (x).end() #define SZ(x) ((int)(x).size()) #define db if(1)printf template<typename C> void MA(C& a,C b){if(a<b)a=b;} template<typename C> void MI(C& a,C b){if(a>b)a=b;} LL a,b,k; int sum(LL a){ if(a == 0)return 0; return sum(a/10) + (a%10)*(a%10); } main(){ scanf("%lld%lld%lld",&k,&a,&b); int wyn = 0; F(i,1,1500){ if(b/i >= k){ LL pom = k*i; if(a <= pom && pom <= b && sum(pom) == i)wyn++; } } printf("%d\n",wyn); } |