Submission #775642

#	Time	Username	Problem	Language	Result	Execution time	Memory
775642		Filya	Robot (JOI21_ho_t4)	C++14	100 / 100	1493 ms	124416 KiB

Main

//♥God will make a way♥
 
//#include <bits/stdc++.h>
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <algorithm>
#include <cmath>
#include <cstring>
#include <cassert>
#include <set>
#include <map>
#include <unordered_map>
#include <vector>
#include <stack>
#include <queue>
#include <iomanip>
#include <bitset>
#include <stdio.h>
#include <climits>
#include <numeric>
using namespace std;
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
//using namespace __gnu_pbds;
//template <typename T>
//using ordered_set = tree <T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
/////////////////////define/////////////////////
#define ci(x) if(x) cout << "YES" << '\n'; else cout << "NO" << '\n';
#define cii(x) if(check(x))
#define MOD 1000000007
#define MOD2 998244353
#define oo 1e9
#define ool 1e18L
#define pii pair<int, int>
#define pll pair<long long, long long>
#define mii map<int, int>
#define vi vector<int>
#define vpi vector<pair<int, int>>
#define vll vector <ll>
#define ff first
#define ss second
#define mp make_pair
#define ll long long
#define ld long double
#define pb push_back
#define eb emplace_back
#define pob pop_back
#define lb lower_bound
#define ub upper_bound
#define bs binary_search
#define sz(x) (int((x).size()))
#define all(x) (x).begin(), (x).end()
#define alll(x) (x), (x) + n
#define clr(x) (x).clear();
#define fri(x) for(int i = 0; i < x; ++i)
#define frj(x) for(int j = 0; j < x; ++j)
#define frp(x) for(int p = 0; p < x; ++p)
#define frr(a, b) for(int i = a; i < b; ++i)
#define frrj(a, b) for(int j = a; j < b; ++j)
#define fra(x) for(int i = 0; i < x; ++i) cin >> a[i];
#define frb(x) for(int i = 0; i < x; ++i) cin >> b[i];
#define frs(x) for(auto it = x.begin(); it != x.end(); ++it)
#define fr(x) for(auto it : x) //el
#define fastio ios_base::sync_with_stdio(false); cin.tie(0);
#define dbg(x) cerr << #x << ": " << x << endl;
#define ce(x) cout << x << endl;
#define uniq(x) x.resize(unique(all(x)) - x.begin()); //make all one after sorting
#define blt __builtin_popcount
/////////////////////print array, vector, deque, set, multiset, pair, map /////////////////////
void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]"; cout << endl;}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(stack <T> v) {cerr << "[ "; stack<T> s = v; while(s.size()) {T i = s.top(); print(i); s.pop(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(queue <T> v) {cerr << "[ "; queue<T> s = v; while(s.size()) {T i = s.front(); print(i); s.pop(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T> void print(deque <T> v) {cerr << "[ "; deque<T> s = v; while(s.size()) {T i = s.front(); print(i); s.pop_front(); cerr << " ";} cerr << "]"; cout << endl;}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
template <class T, class V> void print(unordered_map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]"; cout << endl;}
/////////////////////de/////////////////////
vector<pair<int, pll>> graf[200005];
map<pii, ll> dp; map<pii, bool> vis;
map<int, vector<pair<pii, ll>>> g[200005]; //g[v][c] -> v mtnum enq c ov durs enq galis c ov (miak depqy vori depqum sovorakan dijiky sxal klini en a, vor nuyn guynov ham mtnenq ham durs ganq u dra costy menq avel gumarac linenq(ma[c] - p[c]))
int main() {
    fastio;
    ll n, m, x, y, c, p; cin >> n >> m;
    fri(m) {
        cin >> x >> y >> c >> p;
        graf[x].pb({y, {c, p}});
        graf[y].pb({x, {c, p}});
    }
    map<ll, ll> ma;
    frr(1, 1 + n) {
        for(auto it : graf[i])
            ma[it.ss.ff] += it.ss.ss;
        for(auto it : graf[i]) {
            g[i][0].pb({{it.ff, 0}, min(it.ss.ss, ma[it.ss.ff] - it.ss.ss)}); //sovorakan kox
            g[i][0].pb({{it.ff, it.ss.ff}, 0}); //depi ed c es mi koxy chenq hashvi vortev c ic en myusy hashvum enq arden
            g[i][it.ss.ff].pb({{it.ff, 0}, ma[it.ss.ff] - it.ss.ss}); //mer gagatic ed costov urish gagat durs gal
        }
        ma.clear();
    }
    for(ll i = 1; i <= n; i++) {
        for(auto it : graf[i])
            dp[{i, it.ss.ff}] = 1e18;
        dp[{i, 0}] = 1e18;
    }
    priority_queue<pair<ll, pll>> q;
    dp[{1, 0}] = 0;
    q.push({0, {1, 0}});
    while(!q.empty()){
        pii p = q.top().ss; q.pop();
        if(vis[p]) continue;
        vis[p] = 1;
        for(pair<pii, ll> u : g[p.ff][p.ss]) {
            if(!vis[u.ff] && dp[u.ff] > dp[p] + u.ss) {
                dp[u.ff] = dp[p] + u.ss;
                q.push({-dp[u.ff], u.ff});
            }
        }
    }
    // prll(dp);
    if(dp[{n, 0}] == 1e18) cout << -1;
    else cout << dp[{n,0}];
    return 0;
}

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