Submission #777509

#	Time	Username	Problem	Language	Result	Execution time	Memory
777509		groshi	사이버랜드 (APIO23_cyberland)	C++17	100 / 100	1368 ms	87588 KiB

cyberland

#include<bits/stdc++.h>
#pragma GCC optimize "unroll-loops"
#pragma GCC optimize "O3"
#include "cyberland.h"
using namespace std;
struct wi{
    vector<int> Q;
    double dp[71];
    int co;
    int odw=0;
}*w;
struct node {
    double di;
    int u, k;
    bool operator < (const node& o) const {
        if (k != o.k) return k > o.k;
        return di > o.di;
    }
};
vector<int> moge;
void dfs(int x,int nie)
{
    w[x].odw=1;
    if(x==nie)
        return;
    if(w[x].co==0)
        moge.push_back(x);
    for(int i=0;i<w[x].Q.size();i+=2)
        if(w[w[x].Q[i]].odw==0)
            dfs(w[x].Q[i],nie);
}
double solve(int32_t n,int32_t m,int32_t k,int32_t h,vector<int32_t> x,vector<int32_t> y,vector<int32_t> c, vector<int32_t> arr)
{
    w=new wi[n+3];
    for(int i=0;i<m;i++)
    {
        if(x[i]!=h)
            w[x[i]].Q.push_back(y[i]),w[x[i]].Q.push_back(c[i]);
        if(y[i]!=h)
            w[y[i]].Q.push_back(x[i]),w[y[i]].Q.push_back(c[i]);
    }
    for(int i=0;i<n;i++)
        w[i].co=arr[i];
    moge.clear();
    dfs(0,h);
    moge.push_back(0);
    priority_queue<node> kolejka;
    k=min(k,70);
    for(int i=0;i<n;i++)
        for(int j=0;j<=k;j++)
            w[i].dp[j]=1e14;
    for(int i=0;i<moge.size();i++)
    {
        kolejka.push({0.0,moge[i],0});
        for(int j=0;j<=k;j++)
            w[moge[i]].dp[j]=0;
    }
    while(!kolejka.empty())
    {
        auto [ile,x,typ]=kolejka.top();
        kolejka.pop();
        if(ile!=w[x].dp[typ])
            continue;
        for(int i=0;i<w[x].Q.size();i+=2)
        {
            int pom=w[x].Q[i];
            double dodaj=w[x].Q[i+1];
            if(w[pom].dp[typ]>ile+dodaj)
                kolejka.push({ile+dodaj,pom,typ}),w[pom].dp[typ]=ile+dodaj;
            if(w[pom].co!=2 || typ+1>k)
                continue;
            dodaj+=ile;
            dodaj/=2.0;
            if(w[pom].dp[typ+1]>dodaj)
                kolejka.push({dodaj,pom,typ+1}),w[pom].dp[typ+1]=dodaj;
        }
    }
    double minn=1e14;
    for(int i=0;i<=k;i++)
        minn=min(minn,w[h].dp[i]);
    if(minn==1e14)
        return -1;
    else return minn;
}

Compilation message (stderr)

cyberland.cpp: In function 'void dfs(int, int)':
cyberland.cpp:28:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for(int i=0;i<w[x].Q.size();i+=2)
      |                 ~^~~~~~~~~~~~~~
cyberland.cpp: In function 'double solve(int32_t, int32_t, int32_t, int32_t, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
cyberland.cpp:52:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |     for(int i=0;i<moge.size();i++)
      |                 ~^~~~~~~~~~~~
cyberland.cpp:64:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |         for(int i=0;i<w[x].Q.size();i+=2)
      |                     ~^~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 8 / 8
• Subtask 3: 13 / 13
• Subtask 4: 19 / 19
• Subtask 5: 7 / 7
• Subtask 6: 16 / 16
• Subtask 7: 29 / 29
• Subtask 8: 3 / 3