32 lines
585 B
C++
32 lines
585 B
C++
#include <cmath>
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#include <cstdio>
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#include <cstring>
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#include <iostream>
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using namespace std;
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int a[10000];
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string s1,s2;
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void addd()
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{
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int a1=s1.size(),a2=s2.size();
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for (int i=0;i<a1;i++)
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for (int j=0;j<a2;j++)
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a[a1-i+a2-j-1]+=(s1[i]-'0')*(s2[j]-'0');
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for (int i=1;i<=a1+a2;i++) { a[i+1]+=a[i]/10; a[i]%=10; }
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a[0]=a1+a2; while (a[a[0]]==0&&a[0]>1) a[0]--;
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}
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int main()
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{
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getline(cin,s1);
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getline(cin,s2);
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memset(a,0,sizeof(a));
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addd();
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for (int i=a[0];i>=1;i--) cout<<a[i];
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cout<<endl;
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return 0;
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}
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