Submission #752571

#	Time	Username	Problem	Language	Result	Execution time	Memory
752571		penguin133	Computer Network (BOI14_network)	C++17	0 / 100	84 ms	4496 KiB

network

    #include <bits/stdc++.h>
    using namespace std;
     
    //#define int long long
    #include "network.h"
    #define pi pair<int, int>
    #define pii pair<int, pi>
    #define fi first
    #define se second
    #ifdef _WIN32
    #define getchar_unlocked _getchar_nolock
    #endif
    mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
     
    vector <int> tmp[10005];
     
    void findRoute (int N, int a, int b)
    {
    	int hi;
        for(int i=1;i<=N;i++){
          if(i == b)continue;
    		int x = ping(i, b);
          x++;
    		if(i == a)hi = x;
    		else tmp[x].push_back(i);
    	}
    	int cur = a;
    	while(hi){
    		for(auto i : tmp[hi-1]){
    			if(ping(cur, i) == 1){
    				travelTo(i);
    				cur = i;
    				hi--;
    				break;
    			}
    		}
    	}
      travelTo(b);
    }

Compilation message (stderr)

network.cpp: In function 'void findRoute(int, int, int)':
network.cpp:19:10: warning: 'hi' may be used uninitialized in this function [-Wmaybe-uninitialized]
   19 |      int hi;
      |          ^~
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]);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 25
• Subtask 2: 0 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25