Submission #227166

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
2271662020-04-26 09:41:37abekerMatching (COCI20_matching)C++17
58 / 110
850 ms524292 KiB
#include <bits/stdc++.h>
using namespace std;
typedef pair <int, int> pii;
const int MAXN = 1e5 + 5;
const int offset = 1 << 17;
const int MAXV = 2e7 + 5;
struct Node {
int val;
Node* nxt;
};
class Graph {
Node* get_node(int dest, Node* head) {
Node* newNode = new Node;
newNode -> val = dest;
newNode -> nxt = head;
return newNode;
}
int N;
public:
Node **head;
Graph(int N) {
head = new Node*[N]();
this -> N = N;
for (int i = 0; i < N; i++)
head[i] = nullptr;
}
 
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Compilation message (stderr)

matching.cpp: In function 'int get_id(int, int)':
matching.cpp:118:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  return x >= off[node] && x < off[node] + tour[node].size() ? tour[node][x - off[node]].second : pos[node][x]; 
                           ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
matching.cpp: In function 'bool dfs(int, int, std::vector<int>&)':
matching.cpp:127:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   return x < off[node] + tour[node].size();
          ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
matching.cpp: In function 'void init(int)':
matching.cpp:141:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while (off[x] < tour[x].size())
         ~~~~~~~^~~~~~~~~~~~~~~~
matching.cpp: In function 'void load()':
matching.cpp:97:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
matching.cpp:99:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", x + i, y + i);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~
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