oj.uz

답안 #1112321

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1112321 2024-11-14T04:05:36 Z ljtunas Construction Project 2 (JOI24_ho_t2) C++14
16 / 100
 2000 ms 25944 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

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 8272 KB Output is correct
2 Correct 2 ms 8116 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 4 ms 8528 KB Output is correct
7 Correct 66 ms 22360 KB Output is correct
8 Correct 82 ms 25892 KB Output is correct
9 Correct 79 ms 25944 KB Output is correct
10 Correct 2 ms 8272 KB Output is correct
11 Correct 3 ms 8272 KB Output is correct
12 Correct 4 ms 8272 KB Output is correct
13 Correct 42 ms 8272 KB Output is correct
14 Correct 41 ms 13468 KB Output is correct
15 Execution timed out 2062 ms 19576 KB Time limit exceeded
16 Halted 0 ms 0 KB -

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8272 KB Output is correct
2 Correct 3 ms 8456 KB Output is correct
3 Correct 2 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 4 ms 8272 KB Output is correct
7 Correct 3 ms 8272 KB Output is correct
8 Correct 3 ms 8272 KB Output is correct
9 Correct 3 ms 8272 KB Output is correct
10 Correct 4 ms 8272 KB Output is correct
11 Correct 3 ms 8272 KB Output is correct
12 Correct 3 ms 8444 KB Output is correct
13 Correct 3 ms 8272 KB Output is correct
14 Correct 2 ms 8272 KB Output is correct
15 Correct 3 ms 8440 KB Output is correct
16 Correct 3 ms 8272 KB Output is correct
17 Correct 3 ms 8440 KB Output is correct
18 Correct 3 ms 8272 KB Output is correct
19 Correct 3 ms 8272 KB Output is correct
20 Correct 3 ms 8272 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 8272 KB Output is correct
24 Correct 2 ms 8272 KB Output is correct
25 Correct 3 ms 8444 KB Output is correct
26 Correct 4 ms 8272 KB Output is correct
27 Correct 3 ms 8192 KB Output is correct
28 Correct 3 ms 8272 KB Output is correct
29 Correct 3 ms 8440 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 8440 KB Output is correct

Subtask #3
0.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 8272 KB Output is correct
2 Correct 3 ms 8456 KB Output is correct
3 Correct 2 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 4 ms 8272 KB Output is correct
7 Correct 3 ms 8272 KB Output is correct
8 Correct 3 ms 8272 KB Output is correct
9 Correct 3 ms 8272 KB Output is correct
10 Correct 4 ms 8272 KB Output is correct
11 Correct 3 ms 8272 KB Output is correct
12 Correct 3 ms 8444 KB Output is correct
13 Correct 3 ms 8272 KB Output is correct
14 Correct 2 ms 8272 KB Output is correct
15 Correct 3 ms 8440 KB Output is correct
16 Correct 3 ms 8272 KB Output is correct
17 Correct 3 ms 8440 KB Output is correct
18 Correct 3 ms 8272 KB Output is correct
19 Correct 3 ms 8272 KB Output is correct
20 Correct 3 ms 8272 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 8272 KB Output is correct
24 Correct 2 ms 8272 KB Output is correct
25 Correct 3 ms 8444 KB Output is correct
26 Correct 4 ms 8272 KB Output is correct
27 Correct 3 ms 8192 KB Output is correct
28 Correct 3 ms 8272 KB Output is correct
29 Correct 3 ms 8440 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 8440 KB Output is correct
33 Correct 4 ms 8272 KB Output is correct
34 Correct 4 ms 8528 KB Output is correct
35 Correct 4 ms 8272 KB Output is correct
36 Correct 55 ms 8272 KB Output is correct
37 Correct 4 ms 8272 KB Output is correct
38 Correct 4 ms 8272 KB Output is correct
39 Correct 42 ms 8336 KB Output is correct
40 Correct 4 ms 8700 KB Output is correct
41 Correct 4 ms 8272 KB Output is correct
42 Correct 3 ms 8272 KB Output is correct
43 Correct 69 ms 8456 KB Output is correct
44 Correct 35 ms 8272 KB Output is correct
45 Correct 12 ms 8272 KB Output is correct
46 Correct 4 ms 8272 KB Output is correct
47 Correct 4 ms 8272 KB Output is correct
48 Correct 5 ms 8272 KB Output is correct
49 Correct 5 ms 8272 KB Output is correct
50 Correct 3 ms 8272 KB Output is correct
51 Correct 60 ms 8272 KB Output is correct
52 Correct 35 ms 8440 KB Output is correct
53 Correct 5 ms 8528 KB Output is correct
54 Correct 6 ms 8528 KB Output is correct
55 Correct 24 ms 8512 KB Output is correct
56 Correct 23 ms 8272 KB Output is correct
57 Execution timed out 2066 ms 8272 KB Time limit exceeded
58 Halted 0 ms 0 KB -

Subtask #4
0.0 / 47.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 8272 KB Output is correct
2 Correct 2 ms 8116 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 4 ms 8528 KB Output is correct
7 Correct 66 ms 22360 KB Output is correct
8 Correct 82 ms 25892 KB Output is correct
9 Correct 79 ms 25944 KB Output is correct
10 Correct 2 ms 8272 KB Output is correct
11 Correct 3 ms 8272 KB Output is correct
12 Correct 4 ms 8272 KB Output is correct
13 Correct 42 ms 8272 KB Output is correct
14 Correct 41 ms 13468 KB Output is correct
15 Execution timed out 2062 ms 19576 KB Time limit exceeded
16 Halted 0 ms 0 KB -