Submission #979661

#	Time	Username	Problem	Language	Result	Execution time	Memory
979661		canadavid1	A Plus B (IOI23_aplusb)	C++17	Compilation error	0 ms	0 KiB

aplusb

#include "aplusb.h"
#include <set>
#include <utility>
std::vector<int> smallest_sums(int N, std::vector<int> A, std::vector<int> B) {
  	auto cmp = [&](auto a,auto b){return A[a.first]+B[a.second]<A[b.first]+B[b.second];};
	std::set<std::pair<int,int>,decltype(cmp)> q(cmp);
  	std::vector<int> out;
  	q.emplace(0,0);
  	while(out.size()<N)
    {
      auto[a,b] = *out.begin();
      out.push(A[a]+B[b]);
      out.erase(out.begin());
      if(a+1<N) out.emplace(a+1,b);
      if(b+1<N) out.emplace(a,b+1);
    }
  	return out;
}

Compilation message (stderr)

aplusb.cpp: In function 'std::vector<int> smallest_sums(int, std::vector<int>, std::vector<int>)':
aplusb.cpp:9:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
    9 |    while(out.size()<N)
      |          ~~~~~~~~~~^~
aplusb.cpp:11:11: error: cannot decompose non-array non-class type 'int'
   11 |       auto[a,b] = *out.begin();
      |           ^~~~~
aplusb.cpp:12:11: error: 'class std::vector<int>' has no member named 'push'
   12 |       out.push(A[a]+B[b]);
      |           ^~~~