Submission #141358

#	Time	Username	Problem	Language	Result	Execution time	Memory
141358		Ruxandra985	Easter Eggs (info1cup17_eastereggs)	C++14	0 / 100	3 ms	632 KiB

eastereggs

#include <cstdio>
#include <vector>
#include <algorithm>
#include "grader.h"

using namespace std;
vector <int> w[600];
vector <int> eul;
int p[1200];
int poz;
int findd (int x , int dr){
    int st,mid;
    st = 1;
    while (st<=dr){
        mid = ( st + dr )/2;
        if (p[mid] == x)
            return mid;
        else if (p[mid]<x)
            st = mid + 1;
        else dr = mid - 1;
    }
    return 0;
}
void euler (int nod ,int tata){
    int vecin;
    eul.push_back(nod);
    for (int i = 0 ; i < w[nod].size() ; i++){
        vecin = w[nod][i];
        if (vecin!=tata){
            euler (vecin,nod);
            eul.push_back(nod);
        }
    }
}

int findEgg (int n , vector <pair <int,int> > v){
    int st,dr,mid,sol,x,y,elem;
    vector <int> islands;
    for (int i=1;i<=n;i++)
        w[i].clear();
    elem = 0;
    for (int i=0;i<v.size();i++){
        x = v[i].first;
        y = v[i].second;
        p[++elem] = x;
        p[++elem] = y;
    }
    sort (p+1,p+elem+1);
    int elem2=0;

    for (int i=1;i<=elem;i++)
        if (p[i]!=p[elem2] || !elem2)
            p[++elem2] = p[i];

    for (int i=0;i<v.size();i++){
        x = findd(v[i].first,elem);
        y = findd(v[i].second,elem);
        w[x].push_back(y);
        w[y].push_back(x);
    }
    eul.clear();
    euler(1,0); /// eul e un vector cu parc euler , dim 2*n
    st = 0;
    dr = eul.size()-1;
    while (st<dr){
        mid = (st + dr)/2;
        /// iei de la st la mid
        islands.clear();
        for (int i=st;i<=mid;i++)
            islands.push_back(eul[i]);
        sol = query(islands);
        if (sol == 0)
            st = mid + 1;
        else dr = mid;
    }
    return p[eul[st]];
}

Compilation message (stderr)

eastereggs.cpp: In function 'void euler(int, int)':
eastereggs.cpp:27:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0 ; i < w[nod].size() ; i++){
                      ~~^~~~~~~~~~~~~~~
eastereggs.cpp: In function 'int findEgg(int, std::vector<std::pair<int, int> >)':
eastereggs.cpp:42:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0;i<v.size();i++){
                  ~^~~~~~~~~
eastereggs.cpp:55:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0;i<v.size();i++){
                  ~^~~~~~~~~

• Subtask 1: 0 / 40
• Subtask 2: 0 / 40
• Subtask 3: 0 / 20