Submission #1207803

#	Time	Username	Problem	Language	Result	Execution time	Memory
1207803		tamzid	Mosaic (IOI24_mosaic)	C++20	Compilation error	0 ms	0 KiB

mosaic

#include "mosaic.h"
#include <vector>

std::vector<long long> mosaic(std::vector<int> X, std::vector<int> Y,
                              std::vector<int> T, std::vector<int> B,
                              std::vector<int> L, std::vector<int> R) {
  int Q = (int)T.size();
  std::vector<long long> C(Q, 0);

  int n = X.size();
  vector<int> prefix(n+1,0);
  for(int i=1;i<=n;++i)
  {
    prefix[i]+=prefix[i-1];
    if(X[i-1] == 1)
    {
      ++prefix[i];
    }
  }

  for(int i=0;i<Q;++i)
  {
    int x = L[i] + 1, y = R[i] + 1;
    C[i] = prefix[y] - prefix[x - 1];
  }

  return C;
}

Compilation message (stderr)

mosaic.cpp: In function 'std::vector<long long int> mosaic(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
mosaic.cpp:11:3: error: 'vector' was not declared in this scope
   11 |   vector<int> prefix(n+1,0);
      |   ^~~~~~
mosaic.cpp:11:3: note: suggested alternatives:
In file included from /usr/include/c++/11/vector:67,
                 from mosaic.h:1,
                 from mosaic.cpp:1:
/usr/include/c++/11/bits/stl_vector.h:389:11: note:   'std::vector'
  389 |     class vector : protected _Vector_base<_Tp, _Alloc>
      |           ^~~~~~
In file included from mosaic.h:1,
                 from mosaic.cpp:1:
/usr/include/c++/11/vector:86:13: note:   'std::pmr::vector'
   86 |       using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
      |             ^~~~~~
mosaic.cpp:11:10: error: expected primary-expression before 'int'
   11 |   vector<int> prefix(n+1,0);
      |          ^~~
mosaic.cpp:14:5: error: 'prefix' was not declared in this scope
   14 |     prefix[i]+=prefix[i-1];
      |     ^~~~~~
mosaic.cpp:24:12: error: 'prefix' was not declared in this scope
   24 |     C[i] = prefix[y] - prefix[x - 1];
      |            ^~~~~~