Submission #448390

#	Time	Username	Problem	Language	Result	Execution time	Memory
448390		NhatMinh0208	Robot (JOI21_ho_t4)	C++14	100 / 100	1160 ms	141756 KiB

Main

#ifndef CPL_TEMPLATE
#define CPL_TEMPLATE
/*
	Normie's Template v2.5
	Changes:
    Added warning against using pragmas on USACO.
*/
// Standard library in one include.
#include <bits/stdc++.h>
using namespace std;
 
// ordered_set library.
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set(el) tree<el,null_type,less<el>,rb_tree_tag,tree_order_statistics_node_update>
 
// AtCoder library. (Comment out these two lines if you're not submitting in AtCoder.) (Or if you want to use it in other judges, run expander.py first.)
//#include <atcoder/all>
//using namespace atcoder;

//Pragmas (Comment out these three lines if you're submitting in szkopul or USACO.)
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast,unroll-loops,tree-vectorize")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
 
//File I/O.
#define FILE_IN "cseq.inp"
#define FILE_OUT "cseq.out"
#define ofile freopen(FILE_IN,"r",stdin);freopen(FILE_OUT,"w",stdout)
 
//Fast I/O.
#define fio ios::sync_with_stdio(0);cin.tie(0)
#define nfio cin.tie(0)
#define endl "\n"
 
//Order checking.
#define ord(a,b,c) ((a>=b)and(b>=c))
 
//min/max redefines, so i dont have to resolve annoying compile errors.
#define min(a,b) (((a)<(b))?(a):(b))
#define max(a,b) (((a)>(b))?(a):(b))

// Fast min/max assigns to use with AVX.
// Requires g++ 9.2.0.
template<typename T>
__attribute__((always_inline)) void chkmin(T& a, const T& b) {
    a=(a<b)?a:b;
}

template<typename T>
__attribute__((always_inline)) void chkmax(T& a, const T& b) {
    a=(a>b)?a:b;
}
 
//Constants.
#define MOD (ll(998244353))
#define MAX 300001
#define mag 320
const long double PI=3.14159265358979;
 
//Pairs and 3-pairs.
#define p1 first
#define p2 second.first
#define p3 second.second
#define fi first
#define se second
#define pii(element_type) pair<element_type,element_type>
#define piii(element_type) pair<element_type,pii(element_type)>
 
//Quick power of 2.
#define pow2(x) (ll(1)<<x)
 
//Short for-loops.
#define ff(i,__,___) for(int i=__;i<=___;i++)
#define rr(i,__,___) for(int i=__;i>=___;i--)
 
//Typedefs.
#define bi BigInt
typedef long long ll;
typedef long double ld;
typedef short sh;

// Binpow and stuff
ll BOW(ll a, ll x, ll p)
{
	if (!x) return 1;
	ll res=BOW(a,x/2,p);
	res*=res;
	res%=p;
	if (x%2) res*=a;
	return res%p;
}
ll INV(ll a, ll p)
{
	return BOW(a,p-2,p);
}
//---------END-------//
#endif
vector<pii(ll)> gt[500001];
ll n,m,i,j,k,t,t1,u,v,a,b;
ll ar[200001],br[200001],cr[200001],pr[200001];
map<ll,ll> summ[100001];
map<ll,vector<pii(ll)>> lmao[100001];
ll dis[500001];
priority_queue<pii(ll),vector<pii(ll)>,greater<pii(ll)>> pq;
int main()
{
	fio;
    cin>>n>>m;
    for (i=1;i<=m;i++)
    {
        cin>>ar[i]>>br[i]>>cr[i]>>pr[i];
        lmao[ar[i]][cr[i]].push_back({br[i],i});
        lmao[br[i]][cr[i]].push_back({ar[i],i});
        summ[ar[i]][cr[i]]+=pr[i];
        summ[br[i]][cr[i]]+=pr[i];
    }
    for (i=1;i<=n;i++)
    {
        for (auto &g : lmao[i]) 
        {
            u=summ[i][g.fi];
            for (auto gg : g.se)
            {
                if (i==ar[gg.se])
                {
                    gt[i].push_back({n+2*(gg.se-1)+1,pr[gg.se]});
                }
                else
                {
                    gt[i].push_back({n+2*(gg.se-1)+2,pr[gg.se]});   
                }
                gt[i].push_back({gg.fi,pr[gg.se]});
                gt[i].push_back({gg.fi,u-pr[gg.se]});
            }
            if (g.se.size()>=2)
            {
            sort(g.se.begin(),g.se.end(),[](pii(ll) a, pii(ll) b){
                return (pr[a.se]>pr[b.se]);
            });
            for (j=0;j<g.se.size();j++)
            {
                a=g.se[j].se;
                if (j-0)
                {
                    b=g.se[0].se;
                    if (i==ar[a])
                    {
                        gt[n+2*(a-1)+2].push_back({g.se[0].fi,u-pr[a]-pr[b]});
                    }
                    else
                    {
                        gt[n+2*(a-1)+1].push_back({g.se[0].fi,u-pr[a]-pr[b]});
                    }
                }
                if (j-1)
                {
                    b=g.se[1].se;
                    if (i==ar[a])
                    {
                        gt[n+2*(a-1)+2].push_back({g.se[1].fi,u-pr[a]-pr[b]});
                    }
                    else
                    {
                        gt[n+2*(a-1)+1].push_back({g.se[1].fi,u-pr[a]-pr[b]});
                    }
                }
            }
            }
        }
    }
    for (i=1;i<=n+2*m;i++) 
    {
        dis[i]=1e18;
        //  for (auto g : gt[i]) cout<<i<<' '<<g.fi<<' '<<g.se<<endl;
    }
    dis[1]=0;
    pq.push({0,1});
    while(pq.size())
    {
        auto pp=pq.top();
        pq.pop();
        if (dis[pp.se]-pp.fi) continue;
        for (auto g : gt[pp.se])
        {
            if (dis[g.fi]>pp.fi+g.se)
            {
                dis[g.fi]=pp.fi+g.se;
                pq.push({pp.fi+g.se,g.fi});
            }
        }
    }
    if (dis[n]==1e18) cout<<-1; else cout<<dis[n];
}
// a

Compilation message (stderr)

Main.cpp:23: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
   23 | #pragma comment(linker, "/stack:200000000")
      | 
Main.cpp: In function 'int main()':
Main.cpp:142:23: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  142 |             for (j=0;j<g.se.size();j++)
      |                      ~^~~~~~~~~~~~

• Subtask 1: 34 / 34
• Subtask 2: 24 / 24
• Subtask 3: 42 / 42