oj.uz

Submission #1112320

# Submission time Handle Problem Language Result Execution time Memory
1112320 2024-11-14T04:05:10 Z ljtunas Construction Project 2 (JOI24_ho_t2) C++14
16 / 100
 2000 ms 25904 KB 
// author : anhtun_hi , nqg
#include <bits/stdc++.h>
#define ll long long
#define ii pair<ll, ll>
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define reset(h, v)    memset(h, v, sizeof h)
#define Forv(i, a)     for(auto& i : a)
#define For(i, a, b)   for(int i = a; i <= b; ++i)
#define Ford(i, a, b)  for(int i = a; i >= b; --i)
#define c_bit(i)     __builtin_popcountll(i)
#define Bit(mask, i)    ((mask >> i) & 1LL)
#define onbit(mask, i)  ((mask) bitor (1LL << i))
#define offbit(mask, i) ((mask) &~ (1LL << i))
using namespace std;
namespace std {
    template <typename T, int D>
    struct _vector : public vector <_vector <T, D - 1>> {
        static_assert(D >= 1, "Dimension must be positive!");
        template <typename... Args>
        _vector(int n = 0, Args... args) : vector <_vector <T, D - 1>> (n, _vector <T, D - 1> (args...)) {}
    };
    template <typename T> struct _vector <T, 1> : public vector <T> {
        _vector(int n = 0, const T& val = T()) : vector <T> (n, val) {}
    };
    template <class A, class B> bool minimize(A &a, B b){return a > b ? a = b, true : false;}
    template <class A, class B> bool maximize(A &a, B b){return a < b ? a = b, true : false;}
}
const int dx[] = {0, 0, +1, -1}, dy[] = {-1, +1, 0, 0}, LOG = 20, base = 311, inf = 1e9 + 5;
const int MAXN = 2e5 + 5;
const  ll  mod = 1e9 + 7;
const  ll   oo = 1e18;

//#define int long long

int n, m, s, t; ll L, k;

vector<ii> g[MAXN];
ll d[2][MAXN];

void Solve() {
    cin >> n >> m >> s >> t >> L >> k;
    For(i, 1, m){
        int u, v; ll w;
        cin >> u >> v >> w;
        g[u].push_back({v, w});
        g[v].push_back({u, w});
    }
    priority_queue<array<ll, 3>, vector<array<ll, 3>>> pq;
    reset(d, 0x3f);
    pq.push({0, s, 0}); d[0][s] = 0;
    pq.push({0, t, 1}); d[1][t] = 0;
    while(pq.size()){
        auto [du, u, op] = pq.top(); pq.pop();
        if(du != d[op][u]) continue;
        for(auto [v, w] : g[u]){
            if(d[op][v] > d[op][u] + w){
                d[op][v] = d[op][u] + w;
                pq.push({d[op][v], v, op});
            }   
        }
    }
    if(d[0][t] <= k) cout << 1LL * n * (n - 1) / 2 << '\n';
    else {
        ll ans = 0;
        For(i, 0, 1) sort(d[i] + 1, d[i] + n + 1);
        For(i, 1, n) {
            int l = 0, r = n + 1;
            while(r - l > 1){
                int mid = l + r >> 1;
                if(d[0][i] + d[1][mid] <= k - L) l = mid;
                else r = mid;
            }
            ans += l;
        }
        cout << ans << '\n';
    }
}

int32_t main() {
    cin.tie(0) -> sync_with_stdio(0);
    if(fopen("JOI24_ho_t2.inp", "r")) {
        freopen("JOI24_ho_t2.inp", "r", stdin);
        freopen("JOI24_ho_t2.out", "w", stdout);
    }

    int t = 1;
//    cin >> t;

    for (int test = 1; test <= t; test++) {
        Solve();
    }
    return 0;
}

Compilation message

Main.cpp: In function 'void Solve()':
Main.cpp:55:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   55 |         auto [du, u, op] = pq.top(); pq.pop();
      |              ^
Main.cpp:57:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   57 |         for(auto [v, w] : g[u]){
      |                  ^
Main.cpp:71:29: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   71 |                 int mid = l + r >> 1;
      |                           ~~^~~
Main.cpp: In function 'int32_t main()':
Main.cpp:84:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   84 |         freopen("JOI24_ho_t2.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:85:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |         freopen("JOI24_ho_t2.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8272 KB Output is correct
2 Correct 2 ms 8272 KB Output is correct
3 Correct 3 ms 8272 KB Output is correct
4 Correct 3 ms 8272 KB Output is correct
5 Correct 3 ms 8272 KB Output is correct
6 Correct 5 ms 8528 KB Output is correct
7 Correct 79 ms 22428 KB Output is correct
8 Correct 87 ms 25896 KB Output is correct
9 Correct 73 ms 25904 KB Output is correct
10 Correct 3 ms 8272 KB Output is correct
11 Correct 3 ms 8272 KB Output is correct
12 Correct 3 ms 8372 KB Output is correct
13 Correct 41 ms 8272 KB Output is correct
14 Correct 45 ms 13392 KB Output is correct
15 Execution timed out 2068 ms 19580 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8272 KB Output is correct
2 Correct 3 ms 8440 KB Output is correct
3 Correct 3 ms 8272 KB Output is correct
4 Correct 2 ms 8272 KB Output is correct
5 Correct 3 ms 8272 KB Output is correct
6 Correct 3 ms 8272 KB Output is correct
7 Correct 3 ms 8284 KB Output is correct
8 Correct 2 ms 8272 KB Output is correct
9 Correct 2 ms 8272 KB Output is correct
10 Correct 2 ms 8272 KB Output is correct
11 Correct 3 ms 8272 KB Output is correct
12 Correct 2 ms 8272 KB Output is correct
13 Correct 3 ms 8440 KB Output is correct
14 Correct 3 ms 8272 KB Output is correct
15 Correct 3 ms 8272 KB Output is correct
16 Correct 3 ms 8272 KB Output is correct
17 Correct 3 ms 8272 KB Output is correct
18 Correct 2 ms 8272 KB Output is correct
19 Correct 3 ms 8272 KB Output is correct
20 Correct 3 ms 8444 KB Output is correct
21 Correct 3 ms 8272 KB Output is correct
22 Correct 3 ms 8272 KB Output is correct
23 Correct 3 ms 8440 KB Output is correct
24 Correct 3 ms 8272 KB Output is correct
25 Correct 3 ms 8124 KB Output is correct
26 Correct 3 ms 8272 KB Output is correct
27 Correct 3 ms 8272 KB Output is correct
28 Correct 3 ms 8272 KB Output is correct
29 Correct 3 ms 8272 KB Output is correct
30 Correct 2 ms 8272 KB Output is correct
31 Correct 3 ms 8272 KB Output is correct
32 Correct 3 ms 8284 KB Output is correct

Subtask #3
0.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8272 KB Output is correct
2 Correct 3 ms 8440 KB Output is correct
3 Correct 3 ms 8272 KB Output is correct
4 Correct 2 ms 8272 KB Output is correct
5 Correct 3 ms 8272 KB Output is correct
6 Correct 3 ms 8272 KB Output is correct
7 Correct 3 ms 8284 KB Output is correct
8 Correct 2 ms 8272 KB Output is correct
9 Correct 2 ms 8272 KB Output is correct
10 Correct 2 ms 8272 KB Output is correct
11 Correct 3 ms 8272 KB Output is correct
12 Correct 2 ms 8272 KB Output is correct
13 Correct 3 ms 8440 KB Output is correct
14 Correct 3 ms 8272 KB Output is correct
15 Correct 3 ms 8272 KB Output is correct
16 Correct 3 ms 8272 KB Output is correct
17 Correct 3 ms 8272 KB Output is correct
18 Correct 2 ms 8272 KB Output is correct
19 Correct 3 ms 8272 KB Output is correct
20 Correct 3 ms 8444 KB Output is correct
21 Correct 3 ms 8272 KB Output is correct
22 Correct 3 ms 8272 KB Output is correct
23 Correct 3 ms 8440 KB Output is correct
24 Correct 3 ms 8272 KB Output is correct
25 Correct 3 ms 8124 KB Output is correct
26 Correct 3 ms 8272 KB Output is correct
27 Correct 3 ms 8272 KB Output is correct
28 Correct 3 ms 8272 KB Output is correct
29 Correct 3 ms 8272 KB Output is correct
30 Correct 2 ms 8272 KB Output is correct
31 Correct 3 ms 8272 KB Output is correct
32 Correct 3 ms 8284 KB Output is correct
33 Correct 3 ms 8272 KB Output is correct
34 Correct 3 ms 8528 KB Output is correct
35 Correct 4 ms 8500 KB Output is correct
36 Correct 43 ms 8272 KB Output is correct
37 Correct 3 ms 8440 KB Output is correct
38 Correct 4 ms 8272 KB Output is correct
39 Correct 41 ms 8272 KB Output is correct
40 Correct 4 ms 8528 KB Output is correct
41 Correct 4 ms 8440 KB Output is correct
42 Correct 3 ms 8272 KB Output is correct
43 Correct 63 ms 8272 KB Output is correct
44 Correct 34 ms 8272 KB Output is correct
45 Correct 12 ms 8272 KB Output is correct
46 Correct 5 ms 8272 KB Output is correct
47 Correct 4 ms 8272 KB Output is correct
48 Correct 4 ms 8220 KB Output is correct
49 Correct 4 ms 8272 KB Output is correct
50 Correct 4 ms 8272 KB Output is correct
51 Correct 61 ms 8272 KB Output is correct
52 Correct 35 ms 8444 KB Output is correct
53 Correct 5 ms 8528 KB Output is correct
54 Correct 4 ms 8528 KB Output is correct
55 Correct 24 ms 8272 KB Output is correct
56 Correct 24 ms 8272 KB Output is correct
57 Execution timed out 2062 ms 8272 KB Time limit exceeded
58 Halted 0 ms 0 KB -

Subtask #4
0.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8272 KB Output is correct
2 Correct 2 ms 8272 KB Output is correct
3 Correct 3 ms 8272 KB Output is correct
4 Correct 3 ms 8272 KB Output is correct
5 Correct 3 ms 8272 KB Output is correct
6 Correct 5 ms 8528 KB Output is correct
7 Correct 79 ms 22428 KB Output is correct
8 Correct 87 ms 25896 KB Output is correct
9 Correct 73 ms 25904 KB Output is correct
10 Correct 3 ms 8272 KB Output is correct
11 Correct 3 ms 8272 KB Output is correct
12 Correct 3 ms 8372 KB Output is correct
13 Correct 41 ms 8272 KB Output is correct
14 Correct 45 ms 13392 KB Output is correct
15 Execution timed out 2068 ms 19580 KB Time limit exceeded
16 Halted 0 ms 0 KB -