Submission #216722

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
216722	2020-03-27 22:24:00	peuch	Islands (IOI08_islands)	C++17	15 / 100	618 ms	131076 KiB

islands

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#include<bits/stdc++.h>
using namespace std;
const int MAXN = 1000000;
int n;
int marc[MAXN];
long long dist[MAXN];
 
vector<int> ar[MAXN];
vector<int> wg[MAXN];
int dfs1(int cur);
int dfs2(int cur);
int dfs3(int cur);
int dfs4(int cur);
int main(){
  scanf("%d", &n);
  for(int i = 1; i <= n; i++){
    int aux, auxd;
    scanf("%d %d", &aux, &auxd);
    ar[i].push_back(aux);
    ar[aux].push_back(i);
    wg[i].push_back(auxd);
    wg[aux].push_back(auxd);
  }
  long long ans = 0;
  for(int i = 1; i <= n; i++){
    if(marc[i] != 0) continue;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

islands.cpp: In function 'int dfs1(int)':
islands.cpp:49:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < ar[cur].size(); i++){
                 ~~^~~~~~~~~~~~~~~~
islands.cpp: In function 'int dfs2(int)':
islands.cpp:64:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < ar[cur].size(); i++){
                 ~~^~~~~~~~~~~~~~~~
islands.cpp: In function 'int main()':
islands.cpp:19:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
islands.cpp:22:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &aux, &auxd);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~

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