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back to boardWho can tell me the reason? WA on test 8 Posted by felomid 15 Aug 2018 08:22 this is my code G++ #include<bits/stdc++.h> using namespace std; int n,k; void pl(int a[],int b[],int c[]) { for(int i=1;i<=210;i++) { c[i]+=a[i]+b[i]; c[i+1]+=c[i]/10; c[i]%=10; } }
void cheng(int a[],int x) { for(int i=1;i<=210;i++) { a[i]*=x; a[i]+=(a[i-1]/10); a[i-1]%=10; } } int f[2000][222]; int main() { scanf("%d%d",&n,&k); f[0][0]=0; f[1][0]=1; f[1][1]=k-1; for(int i=2;i<=n;i++) { pl(f[i-2],f[i-1],f[i]); cheng(f[i],k-1); } for(int i=1;i<=210;i++) { f[n][i]+=f[n-1][i]; f[n][i+1]+=f[n][i]/10; f[n][i]%=10; } int h=221; while(!f[n][h]) h--; for(int i=h;i>=1;i--) printf("%d",f[n][i]); return 0; } |
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