Submission #987742

#	Time	Username	Problem	Language	Result	Execution time	Memory
987742		activedeltorre	Shopping Plans (CCO20_day2problem3)	C++14	15 / 25	136 ms	33512 KiB

Main

#include <iostream>
#include <vector>
#include <queue>
#include <algorithm>

using namespace std;
//ifstream cin("a.in");
//ofstream cout("a.out");
long long inf=1e9+10;
struct node
{
    long long  layer,sum,lst;
};
struct  cmp
{
    bool operator()(node a,node  b)
    {
        return a.sum>b.sum;
    }
};
priority_queue<node,vector<node>,cmp>pq;
vector<long long >arr;
vector<long long >adj[200005];
long long cost[200005];
vector<long long>ord;
bool cmp2(long long a,long long b)
{
    return cost[a]<cost[b];
}
signed  main()
{
    long long  n,m,k,i,a,b,x,y;
    long long sum=0;
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin>>n>>m>>k;
    for(i=1; i<=n; i++)
    {
        cin>>a>>b;
        adj[a].push_back(b);
    }
    long long imp=0,minim=inf,poz=m;
    for(i=1; i<=m; i++)
    {
        cin>>x>>y;
        sort(adj[i].begin(),adj[i].end());
        if(adj[i].size()<x)
        {
            for(long long j=1; j<=k; j++)
            {
                cout<<-1<<'\n';
            }
            return 0;
        }
        long long  vkuk=adj[i][0];
        sum+=adj[i][0];
        for(long long  j=0; j<adj[i].size(); j++)
        {
            adj[i][j]-=vkuk;
        }
        if(adj[i].size()>=2)
        {
            cost[i]=adj[i][1];
        }
        else
        {
            cost[i]=inf;
        }
        ord.push_back(i);
    }
    sort(ord.begin(),ord.end(),cmp2);
    m--;
    for(i=0; i<ord.size(); i++)
    {
        if(cost[ord[i]]==inf)
        {
            m=i-1;
            break;
        }
    }
    node curr,curr2;
    cout<<sum<<'\n';
    k--;
    if(m>=0)
    {
        pq.push({0,adj[ord[0]][1],1});
        while(pq.size() && k && imp==0)
        {
            curr=pq.top();
            pq.pop();
            k--;
            cout<<curr.sum+sum<<'\n';
            if(curr.lst==1 && curr.layer+1<=m)
            {
                curr2=curr;
                curr2.layer++;
                curr2.sum=curr2.sum-adj[ord[curr.layer]][1]+adj[ord[curr.layer+1]][1];
                pq.push(curr2);
            }
            if(curr.layer+1<=m)
            {
                curr2=curr;
                curr2.layer++;
                curr2.lst=1;
                curr2.sum=curr2.sum+adj[ord[curr.layer+1]][1];
                pq.push(curr2);
            }
            if(adj[ord[curr.layer]].size()>curr.lst+1)
            {
                curr.sum=curr.sum-adj[ord[curr.layer]][curr.lst]+adj[ord[curr.layer]][curr.lst+1];
                curr.lst++;
                pq.push(curr);
            }
        }
        while(k)
        {
            k--;
            cout<<-1<<'\n';
        }
    }
    return 0;
}
/*
5 2 7
1 5
1 3
2 3
1 6
2 1
1 1
1 1*/

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:47:25: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   47 |         if(adj[i].size()<x)
      |            ~~~~~~~~~~~~~^~
Main.cpp:57:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |         for(long long  j=0; j<adj[i].size(); j++)
      |                             ~^~~~~~~~~~~~~~
Main.cpp:73:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     for(i=0; i<ord.size(); i++)
      |              ~^~~~~~~~~~~
Main.cpp:108:43: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
  108 |             if(adj[ord[curr.layer]].size()>curr.lst+1)
      |                ~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
Main.cpp:42:21: warning: unused variable 'minim' [-Wunused-variable]
   42 |     long long imp=0,minim=inf,poz=m;
      |                     ^~~~~
Main.cpp:42:31: warning: unused variable 'poz' [-Wunused-variable]
   42 |     long long imp=0,minim=inf,poz=m;
      |                               ^~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 0 / 5
• Subtask 5: 0 / 5