Submission #741683

#	Time	Username	Problem	Language	Result	Execution time	Memory
741683		TheOpChicken	Computer Network (BOI14_network)	C++17	Compilation error	0 ms	0 KiB

network

#include <iostream>
#include <vector>
#include "network.h"
using namespace std;

void findRoute(int n, int a, int b){
	vector<vector<int> > dist(n+5, vector<int>());
	vector<int> length(n+5);
	dist[0].push_back(a);
	for (int i = 1; i <= n; i++){
		if (i == a) continue;
		int len = ping(a, i);
		dist[len].push_back(a);
		length[i] = len;
	}

	int cur_node = b;
	vector<int> ans;
	for (int i = length[b]; i >= 1; i--){
		ans.push_back(cur_node);
		for (int node: dist[i-1]){
			int len = ping(cur_node, node);
			if (len == 1){
				cur = node;
				break;
			}
		}
	}

	reverse(ans.begin(), ans.end());
	for (int i = 0; i < ans.size(); i++) travelTo(ans[i]);

	return;
}

Compilation message (stderr)

network.cpp: In function 'void findRoute(int, int, int)':
network.cpp:24:5: error: 'cur' was not declared in this scope
   24 |     cur = node;
      |     ^~~
network.cpp:30:2: error: 'reverse' was not declared in this scope
   30 |  reverse(ans.begin(), ans.end());
      |  ^~~~~~~
network.cpp:31:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |  for (int i = 0; i < ans.size(); i++) travelTo(ans[i]);
      |                  ~~^~~~~~~~~~~~
grader.c: In function 'int main()':
grader.c:48:11: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   48 |     scanf ("%d%d%d%d", &N, &a, &b, &M);
      |     ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
grader.c:51:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |             scanf("%d", &distance[u][v]);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~