Submission #25728

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
25728	2017-06-23 19:20:41	gs14004	Pipes (CEOI15_pipes)	C++11	100 / 100	477 ms	15656 KiB

pipes

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#include <cstdio>
#include <vector>
#include <algorithm>
using namespace std;
typedef pair<int,int> pi;
  
struct disj{
    int pa[100005];
    void init(int n){
        for(int i=0; i<=n; i++) pa[i] = i;
    }
    int find(int x){
        return pa[x] = (pa[x] == x ? x : find(pa[x]));
    }
    bool uni(int p, int q){
        p = find(p);
        q = find(q);
        if(p == q) return 0;
        pa[q] = p;
        find(q);
        return 1;
    }
}disj1, disj2;
  
int n, m;
vector<pi> tree, bri;
vector<int> graph[100005];
  
int par[100005][17], dep[100005];
bool vis[100005];
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

pipes.cpp: In function 'int main()':
pipes.cpp:109:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
            while(p < bri.size() && disj1.find(bri[p].first) == pos){
                  ~~^~~~~~~~~~~~
pipes.cpp:72:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d\n",&n,&m);
     ~~~~~^~~~~~~~~~~~~~~~~
pipes.cpp:78:14: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         fgets(str,15,stdin);
         ~~~~~^~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10