Submission #647912

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
647912	2022-10-04 14:00:50	thorie	The Xana coup (BOI21_xanadu)	C++17	20 / 100	1099 ms	12640 KiB

xanadu

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#include "bits/stdc++.h"
using namespace std;
vector<vector<int>> graph;
vector<bool> on;
vector<bool> onCopy;
vector<int> v1;
vector<int> v2;
void toggle(int k) {
    on[k] = !on[k];
    for (int i = 0; i < graph[k].size(); i++) {
        on[graph[k][i]] = !on[graph[k][i]];
    }
}
void dfs(int x, bool y, int from) {
    if (y) {
        v1.push_back(x);
    }
    else {
        v2.push_back(x);
    }
    for (int i = 0; i < graph[x].size(); i++) {
        if (graph[x][i] != from) {
            dfs(graph[x][i], !y, x);
        }
    }
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

xanadu.cpp: In function 'void toggle(int)':
xanadu.cpp:12:23: 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 < graph[k].size(); i++) {
      |                     ~~^~~~~~~~~~~~~~~~~
xanadu.cpp: In function 'void dfs(int, bool, int)':
xanadu.cpp:24:23: 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 < graph[x].size(); i++) {
      |                     ~~^~~~~~~~~~~~~~~~~
xanadu.cpp: In function 'int main()':
xanadu.cpp:64:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |         for (int j = 0; j < v1.size(); j++) {
      |                         ~~^~~~~~~~~~~
xanadu.cpp:71:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |         for (int j = 0; j < v2.size(); j++) {
      |                         ~~^~~~~~~~~~~
xanadu.cpp:79:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |         for (int j = 0; j < v1.size(); j++) {
      |                         ~~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 15 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 40
• Subtask 5: 0 / 30