Submission #836157

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
836157	2023-08-24 08:05:12	_martynas	Minerals (JOI19_minerals)	C++14	40 / 100	400 ms	26312 KiB

minerals

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#include "minerals.h"
#include <bits/stdc++.h>
using namespace std;
set<int> in;
map<int, int> M;
/*
solve(A, B)
A -> C D
B -> E F
solve(C, E), solve(F, D)
*/
void solve(set<int> A, set<int> B) {
    assert(A.size() == B.size());
    if(A.empty()) return;
    // found a pair
    if(A.size() == 1) {
        M[*A.begin()] = *B.begin();
        return;
    }
    // check which scenario solve is in
    // 1. all A are in, no B are in
    // 2. all A are in, all B are in
    // 3. no A are in, no B are in
    int ina = 0;
    for(int a : A) {
        if(in.count(a)) ina++;
    }
 
 
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Compilation message (stderr)

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from minerals.cpp:2:
minerals.cpp: In function 'void solve(std::set<int>, std::set<int>)':
minerals.cpp:31:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     assert(ina == A.size() || ina == 0);
      |            ~~~~^~~~~~~~~~~
minerals.cpp:36:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     assert(inb == B.size() || inb == 0);
      |            ~~~~^~~~~~~~~~~

• Subtask 1: 6 / 6
• Subtask 2: 25 / 25
• Subtask 3: 9 / 9
• Subtask 4: 0 / 30
• Subtask 5: 0 / 5
• Subtask 6: 0 / 5
• Subtask 7: 0 / 5
• Subtask 8: 0 / 5
• Subtask 9: 0 / 10