Submission #723345

#	Time	Username	Problem	Language	Result	Execution time	Memory
723345		groshi	timeismoney (balkan11_timeismoney)	C++17	100 / 100	1040 ms	1108 KiB

timeismoney

#include<bits/stdc++.h>
#define int long long
using namespace std;
int t[20000][4];
int MAX=1000;
int ojc[3000];
int find_u(int x)
{
    if(ojc[x]==x)
        return x;
    return ojc[x]=find_u(ojc[x]);
}
void union_f(int x,int y)
{
    x=find_u(x);
    y=find_u(y);
    ojc[x]=y;
}
int32_t main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    int n,m,x,y,s,c;
    cin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        cin>>x>>y>>s>>c;
        t[i][0]=x;
        t[i][1]=y;
        t[i][2]=s;
        t[i][3]=c;
    }
    vector<pair<int,int> > Q;
    vector<pair<int,int> > wypisz;
    int S=1e9;
    int T=1e9;
    for(int i=0;i<=MAX;i++)
    {
        for(int j=0;j<n;j++)
            ojc[j]=j;
        vector<pair<int,int> > mam;
        Q.clear();
        for(int j=1;j<=m;j++)
            Q.push_back({i*t[j][2]+(MAX-i)*t[j][3],j});
        sort(Q.begin(),Q.end());
        int wynik=0;
        s=0,c=0;
        for(int i=0;i<Q.size();i++)
        {
            int kto=Q[i].second;
            if(find_u(t[kto][0])==find_u(t[kto][1]))
                continue;
            s+=t[kto][3];
            c+=t[kto][2];
            union_f(t[kto][0],t[kto][1]);
            mam.push_back({t[kto][0],t[kto][1]});
        }
        if(s*c<S*T)
        {
            S=s;
            T=c;
            wypisz=mam;
        }
    }
    cout<<T<<" "<<S<<"\n";
    for(int i=0;i<wypisz.size();i++)
        cout<<wypisz[i].first<<" "<<wypisz[i].second<<"\n";
    return 0;
}

Compilation message (stderr)

timeismoney.cpp: In function 'int32_t main()':
timeismoney.cpp:49:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |         for(int i=0;i<Q.size();i++)
      |                     ~^~~~~~~~~
timeismoney.cpp:47:13: warning: unused variable 'wynik' [-Wunused-variable]
   47 |         int wynik=0;
      |             ^~~~~
timeismoney.cpp:67:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |     for(int i=0;i<wypisz.size();i++)
      |                 ~^~~~~~~~~~~~~~

• Subtask 1: 100 / 100