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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define fi first
  4. #define se second
  5. #define ll long long
  6. #define ull unsigned long long
  7. #define pll pair<ll,ll>
  8. #define pb push_back
  9. #define emb emplace_back
  10. #define lg(x) __lg(x)
  11. #define all(s) s.begin(),s.end()
  12. #define name "test"
  13. #define Mask(i) (1LL<<i)
  14. #define testbit(mask, i) ((mask >> i) & 1LL)
  15. #define onBit(mask, i) (mask | (1LL << i))
  16. #define offBit(mask, i) (mask & ~(1LL << i))
  17. #define flipBit(mask, i) (mask ^ (1LL << i))
  18. #define showbit(mask, x) bitset<x>(mask)
  19. const ll mod = 1e9 + 7;
  20.  
  21. void add(ll &a, ll b){
  22.      if((a += b) >= mod) a -= mod;
  23. }
  24.  
  25.  
  26. const ll inf = 1e18;
  27. const ll lim = 1e7 + 5;
  28. const ll N = 500 + 5;
  29.  
  30. float a[N][N];
  31. float b[N][N];
  32. float c[N][N];
  33. int main()
  34. {
  35.      ios_base::sync_with_stdio(0);
  36.      cout.tie(0);cin.tie(0);
  37.      if(fopen(name".inp","r")){
  38.           freopen(name".inp","r",stdin);
  39.           freopen(name".out","w",stdout);
  40.      }
  41.  
  42.      int n, m; cin >> n >> m;
  43.      for(int i = 1; i <= n; i++)
  44.           for(int j = 1; j <= m; j++)
  45.                cin >> a[i][j];
  46.      int l, k; cin >> l >> k;
  47.      for(int i = 1; i <= l; i++)
  48.           for(int j = 1; j <= k; j++)
  49.                cin >> b[i][j];
  50.  
  51.      for(int i = 1; i <= n; i++)
  52.           for(int j = 1; j <= k; j++)
  53.                for(int u = 1; u <= m; u++)
  54.                     c[i][j] = c[i][j] + a[i][u] * b[u][j];
  55.  
  56.      for(int i = 1; i <= n; i++){
  57.           for(int j = 1; j <= k; j++){
  58.                cout << c[i][j] << " ";
  59.           }cout << '\n';
  60.      }
  61. }
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  73.  
Success #stdin #stdout 0s 544KB
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https://ideone.com/rjaGIs
language:
C++14 (clang 8.0)
created:
3 days ago
visibility:
public

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