oj.uz

Submission #1023093

# Submission time Handle Problem Language Result Execution time Memory
1023093 2024-07-14T09:35:40 Z Arpi2007 Awesome Arrowland Adventure (eJOI19_adventure) C++14
50 / 100
 57 ms 102400 KB 
#include <iostream>
#include <queue>
#include <fstream>
#include <cmath>
#include <algorithm>
#include <string>
#include <vector>
#include <set>
#include <map>
#include <utility>
#include <stack>
#include <math.h>
#include <climits>
#include <iomanip>
#include <unordered_map>
using namespace std;
 
#define ll long long
#define ld long double
#define ull unsigned long long
#define ub upper_bound
#define lb lower_bound 
#define ff first
#define ss second
#define mpr make_pair
#define vi vector<int>
#define vll vector<ll>
#define pii pair<int,int>
#define vpi vector<pii>
#define pb push_back
#define pob pop_back
#define mii map<int,int>
#define vpl vector<pair<ll, ll>>
#define pll pair<ll,ll>
#define all(v) v.begin(),v.end()
#define sz(x) x.size()
#define clr(x) x.clear()
#define yes cout << "YES\n"
#define no cout << "NO\n"
//ifstream cin("bcount.in");
//ofstream cout("bcount.out");
 
void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
}
 
void setprecision(int x) {
 
    cout.setf(ios::fixed | ios::showpoint);
    cout.precision(x);
}
 
/*void setIO(string name = "") {
    if ((int)name.size() > 0) {
        freopen((name + ".in").c_str(), "r", stdin);
        freopen((name + ".out").c_str(), "w", stdout);
    }
}*/
 
ll gcd(ll a, ll b) {
    if (a > b) {
        swap(a, b);
    }
    if (a == 0) {
        return b;
    }
    if (a == b) {
        return a;
    }
    return gcd(b - a, a);
}
 
ll num(ll n) {
    ll ans = 0;
    while (n != 0) {
        ans++;
        n /= 10;
    }
    return ans;
}
 
ll lcm(ll a, ll b) {
    return (a * b) / gcd(a, b);
}
 
ll MOD = 1e9 + 7;
ll MOD2 = 998244353;
 
ll factorial(ll n) {
    ll ans = 1;
    for (int i = 1; i <= n; i++) {
        ans *= i;
        ans %= MOD2;
    }
    return ans;
}
ll fact2(ll n, ll k) {
    ll ans = 1;
    for (int i = 1; i <= n; i++) {
        if (i == k) {
            ans *= (k - 1);
        }
        else {
            ans *= i;
        }
        ans %= MOD2;
    }
    return ans;
}
 
bool isPrime(int n)
{
    if (n <= 1) {
        return false;
    }
    if (n == 2) {
        return true;
    }
    for (int i = 2; i * i <= n; i++) {
        if (n % i == 0)
            return false;
    }
    return true;
}

ll bpow_mod(ll a, ll b, ll mod)
{
  ll ans = 1;
  while (b) {
    if ((b & 1) == 1) {
      ans *= a;
     ans %= mod;
    }
    b >>= 1;
    a *= a;
    a %= mod;
  }
  return ans;
}

 
bool sortbysec(const pair<int, int>& a,
    const pair<int, int>& b)
{
    return (a.second < b.second);
}
 
bool ask(vector<int> vertices) {
    cout << "? " << vertices.size();
    for(int x: vertices) {
        cout << " " << x;
    }
    cout << endl << flush;
    string answer;
    cin >> answer;
    return (answer == "YES");
}

void precalc(){
    return;
}

const int N = 4e6 + 10;
char c[502][502];
vpi g[N];
int m, n;
int dist[N];
int par[N];

bool check(int i, int j){
    if(i <= m && i >= 1 && j <= n && j >= 1){
        return true;
    }
    return false;
}

int f(int i, int j){
    return (i - 1) * n + j;
}

void solve() {
     cin >> m >> n;
    for(int i = 1; i <= m; ++i){
        for(int j = 1; j <= n; ++j){
            cin >> c[i][j];
        }
    }
    for(int i = 1; i <= m; ++i){
        for(int j = 1; j <= n; ++j){
            dist[f(i, j)] = 1e9;
            if(c[i][j] == 'E'){
                if(check(i, j + 1)){
                    g[f(i, j)].pb({f(i, j + 1), 0});
                }
                if(check(i + 1, j)){
                    g[f(i, j)].pb({f(i + 1, j), 1});
                }
                if(check(i, j - 1)){
                    g[f(i, j)].pb({f(i, j - 1), 2});
                }
                if(check(i - 1, j)){
                    g[f(i, j)].pb({f(i - 1, j), 3});
                }
            }
            if(c[i][j] == 'S'){
                if(check(i, j + 1)){
                    g[f(i, j)].pb({f(i, j + 1), 3});
                }
                if(check(i + 1, j)){
                    g[f(i, j)].pb({f(i + 1, j), 0});
                }
                if(check(i, j - 1)){
                    g[f(i, j)].pb({f(i, j - 1), 1});
                }
                if(check(i - 1, j)){
                    g[f(i, j)].pb({f(i - 1, j), 2});
                }
            }
            if(c[i][j] == 'W'){
                if(check(i, j + 1)){
                    g[f(i, j)].pb({f(i, j + 1), 2});
                }
                if(check(i + 1, j)){
                    g[f(i, j)].pb({f(i + 1, j), 3});
                }
                if(check(i, j - 1)){
                    g[f(i, j)].pb({f(i, j - 1), 0});
                }
                if(check(i - 1, j)){
                    g[f(i, j)].pb({f(i - 1, j), 1});
                }
            }
            if(c[i][j] == 'N'){
                if(check(i, j + 1)){
                    g[f(i, j)].pb({f(i, j + 1), 1});
                }
                if(check(i + 1, j)){
                    g[f(i, j)].pb({f(i + 1, j), 2});
                }
                if(check(i, j - 1)){
                    g[f(i, j)].pb({f(i, j - 1), 3});
                }
                if(check(i - 1, j)){
                    g[f(i, j)].pb({f(i - 1, j), 0});
                }
            }
           // cout << sz(g[f(i, j)]) << ' ' << i << ' ' << j << endl;
        }
    }
   // cout << sz(g[5]) << endl;
    priority_queue<pii>pq;
    pq.push({0, 1});
    dist[1] = 0;
    while(!pq.empty()){
        int k = -pq.top().ff;
        int u = pq.top().ss;
        pq.pop();
        if(k > dist[u]){
            continue;
        }
        for(auto i : g[u]){
            if(dist[i.ff] > i.ss + dist[u]){
                dist[i.ff] = i.ss + dist[u];
                pq.push({-dist[i.ff], i.ff});
            }
        }
    }
    int v = n * m;
    if(dist[n * m] == 1e9){
        cout << -1 << endl;return;
    }
    cout << dist[n * m] << endl;
}


void cases() {
    int t;
    cin >> t;
    while (t--) {
        solve();
    }  
}
 
int main() {
    fastio();
    precalc();
    //cases();
    solve();
    return 0;
}

Compilation message

adventure.cpp: In function 'void solve()':
adventure.cpp:270:9: warning: unused variable 'v' [-Wunused-variable]
  270 |     int v = n * m;
      |         ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 94552 KB Output is correct
2 Correct 42 ms 94544 KB Output is correct
3 Correct 41 ms 94548 KB Output is correct
4 Correct 40 ms 94544 KB Output is correct
5 Correct 42 ms 94548 KB Output is correct
6 Correct 43 ms 94548 KB Output is correct
7 Correct 42 ms 94552 KB Output is correct
8 Correct 42 ms 94556 KB Output is correct
9 Correct 41 ms 94756 KB Output is correct
10 Correct 40 ms 94512 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 94552 KB Output is correct
2 Correct 42 ms 94544 KB Output is correct
3 Correct 41 ms 94548 KB Output is correct
4 Correct 40 ms 94544 KB Output is correct
5 Correct 42 ms 94548 KB Output is correct
6 Correct 43 ms 94548 KB Output is correct
7 Correct 42 ms 94552 KB Output is correct
8 Correct 42 ms 94556 KB Output is correct
9 Correct 41 ms 94756 KB Output is correct
10 Correct 40 ms 94512 KB Output is correct
11 Correct 38 ms 94548 KB Output is correct
12 Correct 42 ms 94548 KB Output is correct
13 Correct 46 ms 94800 KB Output is correct
14 Correct 41 ms 94548 KB Output is correct
15 Correct 42 ms 94552 KB Output is correct
16 Correct 44 ms 94556 KB Output is correct
17 Correct 43 ms 94640 KB Output is correct
18 Correct 41 ms 94576 KB Output is correct
19 Correct 42 ms 94548 KB Output is correct
20 Correct 40 ms 94556 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 94548 KB Output is correct
2 Correct 43 ms 94544 KB Output is correct
3 Correct 42 ms 94544 KB Output is correct
4 Correct 46 ms 94800 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 94556 KB Output is correct
2 Correct 53 ms 94548 KB Output is correct
3 Correct 41 ms 94548 KB Output is correct
4 Correct 42 ms 94572 KB Output is correct
5 Correct 41 ms 94548 KB Output is correct
6 Correct 40 ms 94548 KB Output is correct
7 Correct 43 ms 94548 KB Output is correct
8 Correct 41 ms 94576 KB Output is correct
9 Correct 40 ms 94556 KB Output is correct
10 Correct 41 ms 94712 KB Output is correct

Subtask #5
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 94552 KB Output is correct
2 Correct 42 ms 94544 KB Output is correct
3 Correct 41 ms 94548 KB Output is correct
4 Correct 40 ms 94544 KB Output is correct
5 Correct 42 ms 94548 KB Output is correct
6 Correct 43 ms 94548 KB Output is correct
7 Correct 42 ms 94552 KB Output is correct
8 Correct 42 ms 94556 KB Output is correct
9 Correct 41 ms 94756 KB Output is correct
10 Correct 40 ms 94512 KB Output is correct
11 Correct 38 ms 94548 KB Output is correct
12 Correct 42 ms 94548 KB Output is correct
13 Correct 46 ms 94800 KB Output is correct
14 Correct 41 ms 94548 KB Output is correct
15 Correct 42 ms 94552 KB Output is correct
16 Correct 44 ms 94556 KB Output is correct
17 Correct 43 ms 94640 KB Output is correct
18 Correct 41 ms 94576 KB Output is correct
19 Correct 42 ms 94548 KB Output is correct
20 Correct 40 ms 94556 KB Output is correct
21 Correct 40 ms 94548 KB Output is correct
22 Correct 43 ms 94544 KB Output is correct
23 Correct 42 ms 94544 KB Output is correct
24 Correct 46 ms 94800 KB Output is correct
25 Correct 39 ms 94556 KB Output is correct
26 Correct 53 ms 94548 KB Output is correct
27 Correct 41 ms 94548 KB Output is correct
28 Correct 42 ms 94572 KB Output is correct
29 Correct 41 ms 94548 KB Output is correct
30 Correct 40 ms 94548 KB Output is correct
31 Correct 43 ms 94548 KB Output is correct
32 Correct 41 ms 94576 KB Output is correct
33 Correct 40 ms 94556 KB Output is correct
34 Correct 41 ms 94712 KB Output is correct
35 Correct 45 ms 95572 KB Output is correct
36 Correct 41 ms 94808 KB Output is correct
37 Correct 45 ms 95824 KB Output is correct
38 Correct 45 ms 96604 KB Output is correct
39 Runtime error 57 ms 102400 KB Execution killed with signal 9
40 Halted 0 ms 0 KB -