Submission #1062916

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1062916	2024-08-17 11:52:32	nightfal	Stations (IOI20_stations)	C++17	39 / 100	619 ms	1016 KiB

stations

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#include <vector>
#include <iostream>
#include <cmath>
#include <algorithm>
using namespace std;
template <typename T> void print(T elem) {cout << elem << " ";}
template <typename T> void print(vector<T> &v) {for(auto elem: v) print(elem); cout << endl;}
template <typename T> void print(vector<vector<T>> &v) {for(auto elem: v) print(elem); cout << endl;}
void makeG(vector<vector<int>> &g, vector<int> &u, vector<int> &v) {
  for(int i=0; i<u.size(); i++) {
    g[u[i]].push_back(v[i]);
    g[v[i]].push_back(u[i]);
  }
}
int labelSubDecision(int n, int k, vector<vector<int>> &g, vector<int> &u, vector<int> &v) {
  if (k==pow(10,9)) return 4;
  int cnt = 0;
  for(int i=0; i<n; i++) if (g[i].size()>2) cnt++;
  if (cnt==0) return 1;
  bool subtask2 = true;
  for(int i=0; i<u.size(); i++)
    if (!(u[i]==i+1 && v[i]==i/2 || u[i]==i/2 && v[i]==i+1)) subtask2= false;
  if (subtask2) return 2;
  if (cnt==1) return 3;
}
void labelLine(int cnt, int node, vector<vector<int>> &g, vector<int> &labels) {
  while(labels[node]==-1) {
 
 
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Compilation message (stderr)

stations.cpp: In function 'void makeG(std::vector<std::vector<int> >&, std::vector<int>&, std::vector<int>&)':
stations.cpp:12:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |  for(int i=0; i<u.size(); i++) {
      |               ~^~~~~~~~~
stations.cpp: In function 'int labelSubDecision(int, int, std::vector<std::vector<int> >&, std::vector<int>&, std::vector<int>&)':
stations.cpp:24:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |  for(int i=0; i<u.size(); i++)
      |               ~^~~~~~~~~
stations.cpp:25:19: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   25 |   if (!(u[i]==i+1 && v[i]==i/2 || u[i]==i/2 && v[i]==i+1)) subtask2= false;
stations.cpp: In function 'void labelSub3(int, std::vector<std::vector<int> >&, std::vector<int>&)':
stations.cpp:47:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |  for(int i=0; i<g[root].size(); i++) {
      |               ~^~~~~~~~~~~~~~~
stations.cpp: In function 'void dfs(int, int, std::vector<std::vector<int> >&, std::vector<int>&)':
stations.cpp:53:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |  for(int i=0; i<g[node].size(); i++) {
      |               ~^~~~~~~~~~~~~~~
stations.cpp: In function 'int findSubDecision(int, int, std::vector<int>&)':
stations.cpp:79:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |  for(int i=0; i<c.size(); i++)
      |               ~^~~~~~~~~
stations.cpp: In function 'int labelSubDecision(int, int, std::vector<std::vector<int> >&, std::vector<int>&, std::vector<int>&)':
stations.cpp:28:1: warning: control reaches end of non-void function [-Wreturn-type]
   28 | }
      | ^
stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:65:25: warning: control reaches end of non-void function [-Wreturn-type]
   65 |  vector<vector<int>> g(n);
      |                         ^
stations.cpp: In function 'int findSub3(int, int, std::vector<int>&)':
stations.cpp:104:1: warning: control reaches end of non-void function [-Wreturn-type]
  104 | }
      | ^

• Subtask 1: 5 / 5
• Subtask 2: 8 / 8
• Subtask 3: 16 / 16
• Subtask 4: 10 / 10
• Subtask 5: 0 / 61