Submission #955784

#	Time	Username	Problem	Language	Result	Execution time	Memory
955784		vjudge1	Pinball (JOI14_pinball)	C++17	0 / 100	2 ms	6492 KiB

pinball

#include <bits/stdc++.h>

using namespace std;
vector<tuple<long long,long long,long long,long long> > v;
long long n,m;
bool visited[205][605][605];
long long dp[205][605][605];
map<long long,long long> prevod;
bool gotovo=false;

long long f(long long poz,long long l,long long r)
{
    //cout<< "poz = "<<poz<<" l="<<l<<" r="<<r<<endl;
    if (poz==-1)
    {
        if (l==1 && r==n)
        {
            gotovo=true;
            return 0;
        }
        return 1000000000000000;
    }
    if (visited[poz][l][r]) return dp[poz][l][r];

    long long op1=f(poz-1,l,r);
    long long op2=1000000000000000;

    long long a=get<0>(v[poz]),b=get<1>(v[poz]),c=get<2>(v[poz]);
    if (c>=l && c<=r) op2=f(poz-1,min(a,l),max(b,r))+get<3>(v[poz]);

    long long odg=min(op1,op2);
    visited[poz][l][r]=true;
    dp[poz][l][r]=odg;
    return odg;
}

int main()
{
    cin>>m>>n;

    vector<int> pocetni;
    for (long long i=0;i<m;i++)
    {
        long long a,b,c,d;
        pocetni.push_back(a);
        pocetni.push_back(b);
        pocetni.push_back(c);
        cin>>a>>b>>c>>d;
        v.push_back({a,b,c,d});
    }

    sort(pocetni.begin(),pocetni.end());
    int p=1;
    for (int i=0;i<pocetni.size();i++)
    {
        int x=pocetni[i];
        if (prevod[x]==0)
        {
            prevod[x]=p;
            p++;
        }
    }

    for (int i=0;i<v.size();i++)
    {
        get<0>(v[i])=prevod[get<0>(v[i])];
        get<1>(v[i])=prevod[get<1>(v[i])];
        get<2>(v[i])=prevod[get<2>(v[i])];
    }

    long long odg=1000000000000000;
    for (long long i=m-1;i>=0;i--)
        odg = min(odg,get<3>(v[i])+f(i-1,get<0>(v[i]),get<1>(v[i])));

    if (gotovo==false) odg=-1;
    cout<<odg<<endl;
    return 0;
}

Compilation message (stderr)

pinball.cpp: In function 'int main()':
pinball.cpp:54:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     for (int i=0;i<pocetni.size();i++)
      |                  ~^~~~~~~~~~~~~~~
pinball.cpp:64:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::tuple<long long int, long long int, long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |     for (int i=0;i<v.size();i++)
      |                  ~^~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 18
• Subtask 3: 0 / 22
• Subtask 4: 0 / 49