fork download
copy 
  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define endl '\n'
  4. typedef long long ll;
  5. int r1,r2,c1,c2,sum=0;
  6. vector<vector<int> >v1;
  7. vector<vector<int> >v2;
  8. vector<vector<int> >v3;
  9. void Multi(int r,int c,int i)
  10. {
  11.     if(r>=r1)
  12.         return;
  13.     sum+=(v1[r][i]*v2[i][c]);
  14.     if(i>=r2)
  15.     {
  16.         c++;
  17.         i=0;
  18.         v3[r][c]=sum;
  19.         sum=0;
  20.     }
  21.     if(c>=c2)
  22.     {
  23.         r++;
  24.         c=0;
  25.     }
  26.     Multi(r,c,i+1);
  27. }
  28. int main()
  29. {
  30.     ios::sync_with_stdio(0);
  31.     cin.tie(0);
  32.     cout.tie(0);
  33.     //freopen("popcorn.in","r",stdin);
  34.     cin>>r1>>c1;
  35.     v1.resize(r1,vector<int>(c1));
  36.     for(int i=0; i<r1; i++)
  37.         for(int j=0; j<c1; j++)
  38.             cin>>v1[i][j];
  39.     cin>>r2>>c2;
  40.     v2.resize(r2,vector<int>(c2));
  41.     for(int i=0; i<r2; i++)
  42.         for(int j=0; j<c2; j++)
  43.             cin>>v2[i][j];
  44.     v3.resize(r1,vector<int>(c2));
  45.     int r=0,c=0,i=0;
  46.     Multi(r,c,i);
  47.     for(int i=0; i<r1; i++)
  48.     {
  49.         for(int j=0; j<c2; j++)
  50.             cout<<v3[i][j]<<" ";
  51.         cout<<endl;
  52.     }
  53. }
  54.  
Success #stdin #stdout 0s 15240KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/9HApkA
language:
C++14 (clang 8.0)
created:
5 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!