#include<iostream> #include<cstring> #include<cstdio> using namespace std; int main() { char a1[100],b1[100]; int a[100],b[100],c[100],lena,lenb,lenc,i,j,x; memset(a,0,sizeof(a)); memset(b,0,sizeof(b)); memset(c,0,sizeof(c)); gets(a1);gets(b1); lena=strlen(a1);lenb=strlen(b1); for (i=0;i<=lena-1;i++) a[lena-i]=a1[i]-48; for (i=0;i<=lenb-1;i++) b[lenb-i]=b1[i]-48; for (i=1;i<=lena;i++) { x=0; for (j=1;j<=lenb;j++) { c[i+j-1]=a[i]*b[j]+x+c[i+j-1]; c[i+j-1] %= 10; } c[i+lenb]=x; } lenc=lena+lenb; while (c[lenc]==0&&lenc>1) lenc--; for (i=lenc;i>=1;i--) cout<<c[i]; cout<<endl; return 0; }