oj.uz

Submission #751833

# Submission time Handle Problem Language Result Execution time Memory
751833 2023-06-01T14:52:48 Z Kihihihi Robot (JOI21_ho_t4) C++17
24 / 100
 1365 ms 92676 KB 
#include <iostream>
#include <iomanip>
#include <algorithm>
#include <numeric>
#include <cmath>
#include <cassert>
#include <ctime>
#include <chrono>
#include <cstdio>
#include <random>
#include <vector>
#include <string>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <deque>
#include <queue>
#include <bitset>
#include <list>
#include <fstream>
#include <functional>
#include <complex>
using namespace std;
mt19937_64 rnd(chrono::steady_clock::now().time_since_epoch().count());

short skip_cin = 0;
const long long INF = 1e18, MOD = 1e9 + 7, MOD2 = 998244353, LOG = 18;
const long double EPS = 1e-9, PI = acos(-1);

struct edge
{
    long long to, p;
};

long long n;
map<long long, vector<edge>> g[100000];
map<long long, long long> sume[100000], dist[100000];

void solve()
{
    long long m;
    cin >> n >> m;
    for (long long i = 0; i < m; i++)
    {
        long long a, b, c, p;
        cin >> a >> b >> c >> p;
        a--; b--;
        g[a][c].push_back({ b, p });
        g[b][c].push_back({ a, p });
    }
    for (long long v = 0; v < n; v++)
    {
        dist[v][0] = INF;
        for (auto& i : g[v])
        {
            for (auto& j : i.second)
            {
                dist[j.to][i.first] = INF;
                sume[v][i.first] += j.p;
            }
        }
    }

    dist[0][0] = 0;
    set<tuple<long long, long long, long long>> q = { { 0, 0, 0 } };
    while (q.size())
    {
        auto [d, v, pc] = *q.begin();
        q.erase(q.begin());

        if (pc != 0)
        {
            long long del = -INF;
            for (auto& i : g[v][pc])
            {
                if (dist[i.to][0] + i.p == d)
                {
                    del = max(del, i.p);
                }
            }

            for (auto& i : g[v][pc])
            {
                long long add = sume[v][pc] - del - i.p;
                if (add < 0)
                {
                    continue;
                }
                if (d + add < dist[i.to][0])
                {
                    q.erase({ dist[i.to][0], i.to, 0 });
                    dist[i.to][0] = d + add;
                    q.insert({ dist[i.to][0], i.to, 0 });
                }
            }
            continue;
        }

        for (auto& [col, adj] : g[v])
        {
            for (auto& i : adj)
            {
                if (d + i.p < dist[i.to][col])
                {
                    q.erase({ dist[i.to][col], i.to, col });
                    dist[i.to][col] = d + i.p;
                    q.insert({ dist[i.to][col], i.to, col });
                }

                long long add = min(i.p, sume[v][col] - i.p);
                if (d + add < dist[i.to][0])
                {
                    q.erase({ dist[i.to][0], i.to, 0 });
                    dist[i.to][0] = d + add;
                    q.insert({ dist[i.to][0], i.to, 0 });
                }
            }
        }
    }
    cout << (dist[n - 1][0] == INF ? -1 : dist[n - 1][0]) << "\n";
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    srand(time(NULL));

    int tst = 1;
    //cin >> tst;
    while (tst--)
    {
        solve();
    }

    return 0;
}

/*
<3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3
⠀⠀⠀⠀⠀⠀⠀⠀⠀⣠⠤⠖⠚⢉⣩⣭⡭⠛⠓⠲⠦⣄⡀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⢀⡴⠋⠁⠀⠀⠊⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠳⢦⡀⠀⠀⠀⠀
⠀⠀⠀⠀⢀⡴⠃⢀⡴⢳⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⣆⠀⠀⠀
⠀⠀⠀⠀⡾⠁⣠⠋⠀⠈⢧⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⢧⠀⠀
⠀⠀⠀⣸⠁⢰⠃⠀⠀⠀⠈⢣⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⣇⠀
⠀⠀⠀⡇⠀⡾⡀⠀⠀⠀⠀⣀⣹⣆⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢹⠀
⠀⠀⢸⠃⢀⣇⡈⠀⠀⠀⠀⠀⠀⢀⡑⢄⡀⢀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⡇
⠀⠀⢸⠀⢻⡟⡻⢶⡆⠀⠀⠀⠀⡼⠟⡳⢿⣦⡑⢄⠀⠀⠀⠀⠀⠀⠀⠀⢸⡇
⠀⠀⣸⠀⢸⠃⡇⢀⠇⠀⠀⠀⠀⠀⡼⠀⠀⠈⣿⡗⠂⠀⠀⠀⠀⠀⠀⠀⢸⠁
⠀⠀⡏⠀⣼⠀⢳⠊⠀⠀⠀⠀⠀⠀⠱⣀⣀⠔⣸⠁⠀⠀⠀⠀⠀⠀⠀⢠⡟⠀
⠀⠀⡇⢀⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⠀⡇⠀⠀⠀⠀⠀⠀⠀⠀⢸⠃⠀
⠀⢸⠃⠘⡇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢸⠁⠀⠀⢀⠀⠀⠀⠀⠀⣾⠀⠀
⠀⣸⠀⠀⠹⡄⠀⠀⠈⠁⠀⠀⠀⠀⠀⠀⠀⡞⠀⠀⠀⠸⠀⠀⠀⠀⠀⡇⠀⠀
⠀⡏⠀⠀⠀⠙⣆⠀⠀⠀⠀⠀⠀⠀⢀⣠⢶⡇⠀⠀⢰⡀⠀⠀⠀⠀⠀⡇⠀⠀
⢰⠇⡄⠀⠀⠀⡿⢣⣀⣀⣀⡤⠴⡞⠉⠀⢸⠀⠀⠀⣿⡇⠀⠀⠀⠀⠀⣧⠀⠀
⣸⠀⡇⠀⠀⠀⠀⠀⠀⠉⠀⠀⠀⢹⠀⠀⢸⠀⠀⢀⣿⠇⠀⠀⠀⠁⠀⢸⠀⠀
⣿⠀⡇⠀⠀⠀⠀⠀⢀⡤⠤⠶⠶⠾⠤⠄⢸⠀⡀⠸⣿⣀⠀⠀⠀⠀⠀⠈⣇⠀
⡇⠀⡇⠀⠀⡀⠀⡴⠋⠀⠀⠀⠀⠀⠀⠀⠸⡌⣵⡀⢳⡇⠀⠀⠀⠀⠀⠀⢹⡀
⡇⠀⠇⠀⠀⡇⡸⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠙⠮⢧⣀⣻⢂⠀⠀⠀⠀⠀⠀⢧
⣇⠀⢠⠀⠀⢳⠇⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⡎⣆⠀⠀⠀⠀⠀⠘
⢻⠀⠈⠰⠀⢸⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠰⠘⢮⣧⡀⠀⠀⠀⠀
⠸⡆⠀⠀⠇⣾⠀⠀⠀⠀⠀⠀⠀⠀⠀⢠⠆⠀⠀⠀⠀⠀⠀⠀⠙⠳⣄⡀⢢⡀
<3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3
*/

Subtask #1
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14292 KB Output is correct
2 Correct 10 ms 14292 KB Output is correct
3 Correct 10 ms 14372 KB Output is correct
4 Correct 10 ms 14292 KB Output is correct
5 Correct 10 ms 14420 KB Output is correct
6 Correct 9 ms 14312 KB Output is correct
7 Correct 10 ms 14596 KB Output is correct
8 Correct 8 ms 14420 KB Output is correct
9 Correct 13 ms 15140 KB Output is correct
10 Correct 12 ms 15052 KB Output is correct
11 Correct 10 ms 14804 KB Output is correct
12 Incorrect 10 ms 14700 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 295 ms 36712 KB Output is correct
2 Correct 114 ms 26508 KB Output is correct
3 Correct 193 ms 31460 KB Output is correct
4 Correct 169 ms 29488 KB Output is correct
5 Correct 1365 ms 92676 KB Output is correct
6 Correct 981 ms 80564 KB Output is correct
7 Correct 457 ms 63016 KB Output is correct
8 Correct 444 ms 52184 KB Output is correct
9 Correct 483 ms 52292 KB Output is correct
10 Correct 446 ms 53944 KB Output is correct
11 Correct 189 ms 40148 KB Output is correct

Subtask #3
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14292 KB Output is correct
2 Correct 10 ms 14292 KB Output is correct
3 Correct 10 ms 14372 KB Output is correct
4 Correct 10 ms 14292 KB Output is correct
5 Correct 10 ms 14420 KB Output is correct
6 Correct 9 ms 14312 KB Output is correct
7 Correct 10 ms 14596 KB Output is correct
8 Correct 8 ms 14420 KB Output is correct
9 Correct 13 ms 15140 KB Output is correct
10 Correct 12 ms 15052 KB Output is correct
11 Correct 10 ms 14804 KB Output is correct
12 Incorrect 10 ms 14700 KB Output isn't correct
13 Halted 0 ms 0 KB -