oj.uz

Submission #873773

# Submission time Handle Problem Language Result Execution time Memory
873773 2023-11-15T17:35:39 Z thienhx Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 870 ms 59600 KB 
#include <bits/stdc++.h>
using namespace std;

// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")

using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using str = string;
using ld = long double;
using db = double;

///--------------------------------

#define           F   first
#define           S   second
#define          pb   push_back
#define          lb   lower_bound
#define          ub   upper_bound
#define       sz(x)   (int)((x).size())
#define      all(x)   (x).begin(), (x).end()
#define     rall(x)   (x).rbegin(), (x).rend()
#define   mem(f, x)   memset(f, x, sizeof(f))
#define  uniqueV(x)   sort(all(x)), (x).resize(unique(all(x)) - x.begin())

template<class T> bool maximize(T &a, const T &b){ return (a < b ? a = b, 1 : 0); }
template<class T> bool minimize(T &a, const T &b){ return (a > b ? a = b, 1 : 0); }

///--------------------------------

#define PROBLEM "test"

const int MOD = 1e9 + 7; // 998244353;
const ll INF = 1e18;
const ld eps = 1e-9;
const ld PI = acos(-1);
const int dx[4]{0, 1, 0, -1}, dy[4]{1, 0, -1, 0}; // R D L U
const int ddx[4]{-1, 1, 1, -1}, ddy[4]{1, 1, -1, -1}; // UR DR DL UL

///--------------------------------

void precalc();
void solve();

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    
    if (fopen(PROBLEM".inp", "r")) {
        freopen(PROBLEM".inp", "r", stdin);
        freopen(PROBLEM".out", "w", stdout);
    }

    constexpr bool MULTI_TEST = 0;

    int t = 1;
    if (MULTI_TEST) cin >> t;

    while (t--)
        solve();
    
    // cerr << setprecision(3) << fixed;
    // cerr << "[" << 1.0 * clock() / CLOCKS_PER_SEC << "s]  ";
}

///--------------------[PROBLEM SOLUTION]--------------------///

const int BLOCKSZ = 200;
const int maxn = 30030;
ll dist[maxn][BLOCKSZ + 1];
bool vis[maxn][BLOCKSZ + 1];
vector<ll> spec[maxn];
ll n, m, P[maxn], B[maxn];

void solve() {
    cin >> n >> m;

    for (int i = 0; i < m; i++) {
        cin >> B[i] >> P[i];

        spec[B[i]].pb(P[i]);
    }

    mem(dist, 0x3f);
    mem(vis, false);
    priority_queue<array<ll, 3>, vector<array<ll, 3>>, greater<array<ll, 3>>> pq;

    auto addHeavy = [&](int x, int y, ll D) -> void {
        for (int nx = x % y; nx < n; nx += y) {
            if (!vis[nx][BLOCKSZ]  && minimize(dist[nx][BLOCKSZ], D + abs(nx - x) / y))
                pq.push({dist[nx][BLOCKSZ], nx, BLOCKSZ});
        }
    };
    
    if (P[0] >= BLOCKSZ)
        addHeavy(B[0], P[0], 0);

    dist[B[0]][BLOCKSZ] = 0;
    pq.push({0, B[0], BLOCKSZ});

    while (pq.size()) {
        int x = pq.top()[1], y = pq.top()[2]; pq.pop();    

        if (vis[x][y]) continue;
        
        vis[x][y] = true;
        if (y == BLOCKSZ) {
            for (ll cy : spec[x]) {
                if (cy < BLOCKSZ) {
                    if (!vis[x][cy] && minimize(dist[x][cy], dist[x][y]))
                        pq.push({dist[x][cy], x, cy});
                }
                else addHeavy(x, cy, dist[x][BLOCKSZ]);
            }
            spec[x].clear();

            continue;
        }

        //dummy vertex
        if (x - y >= 0 && !vis[x -  y][BLOCKSZ]
                 && minimize(dist[x - y][BLOCKSZ], dist[x][y] + 1))
            pq.push({dist[x - y][BLOCKSZ], x - y, BLOCKSZ});
        if (x + y < n && !vis[x + y][BLOCKSZ]
                 && minimize(dist[x + y][BLOCKSZ], dist[x][y] + 1))
            pq.push({dist[x + y][BLOCKSZ], x + y, BLOCKSZ});

        //direct path
        if (x - y >= 0 && !vis[x -  y][y]
                 && minimize(dist[x - y][y], dist[x][y] + 1))
            pq.push({dist[x - y][y], x - y, y});
        if (x + y < n && !vis[x + y][y]
                 && minimize(dist[x + y][y], dist[x][y] + 1))
            pq.push({dist[x + y][y], x + y, y});
    }

    cout << (!vis[B[1]][BLOCKSZ] ? -1 : dist[B[1]][BLOCKSZ]) << '\n';
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:52:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |         freopen(PROBLEM".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
skyscraper.cpp:53:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |         freopen(PROBLEM".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 54616 KB Output is correct
2 Correct 7 ms 54364 KB Output is correct
3 Correct 8 ms 54524 KB Output is correct
4 Correct 7 ms 54364 KB Output is correct
5 Correct 7 ms 54444 KB Output is correct
6 Correct 7 ms 54364 KB Output is correct
7 Correct 7 ms 54364 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 54364 KB Output is correct
2 Correct 7 ms 54616 KB Output is correct
3 Correct 7 ms 54364 KB Output is correct
4 Correct 7 ms 54364 KB Output is correct
5 Correct 7 ms 54364 KB Output is correct
6 Correct 7 ms 54436 KB Output is correct
7 Correct 7 ms 54364 KB Output is correct
8 Correct 8 ms 54364 KB Output is correct
9 Correct 7 ms 54364 KB Output is correct
10 Correct 7 ms 54620 KB Output is correct
11 Correct 8 ms 54620 KB Output is correct
12 Correct 7 ms 54620 KB Output is correct
13 Correct 7 ms 54508 KB Output is correct
14 Correct 8 ms 54620 KB Output is correct
15 Correct 8 ms 54620 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 54364 KB Output is correct
2 Correct 7 ms 54364 KB Output is correct
3 Correct 7 ms 54620 KB Output is correct
4 Correct 7 ms 54364 KB Output is correct
5 Correct 7 ms 54492 KB Output is correct
6 Correct 7 ms 54620 KB Output is correct
7 Correct 7 ms 54360 KB Output is correct
8 Correct 7 ms 54364 KB Output is correct
9 Correct 7 ms 54364 KB Output is correct
10 Correct 7 ms 54620 KB Output is correct
11 Correct 8 ms 54552 KB Output is correct
12 Correct 7 ms 54620 KB Output is correct
13 Correct 7 ms 54620 KB Output is correct
14 Correct 8 ms 54620 KB Output is correct
15 Correct 7 ms 54564 KB Output is correct
16 Correct 7 ms 54620 KB Output is correct
17 Correct 9 ms 54620 KB Output is correct
18 Correct 7 ms 54620 KB Output is correct
19 Correct 7 ms 54620 KB Output is correct
20 Correct 8 ms 54620 KB Output is correct
21 Correct 7 ms 54620 KB Output is correct
22 Correct 7 ms 54636 KB Output is correct
23 Correct 8 ms 54620 KB Output is correct
24 Correct 9 ms 54620 KB Output is correct
25 Correct 7 ms 54604 KB Output is correct
26 Correct 8 ms 54816 KB Output is correct
27 Correct 8 ms 54540 KB Output is correct
28 Correct 9 ms 54620 KB Output is correct
29 Correct 13 ms 54620 KB Output is correct
30 Correct 9 ms 54620 KB Output is correct
31 Correct 11 ms 54652 KB Output is correct
32 Correct 10 ms 54656 KB Output is correct
33 Correct 22 ms 54812 KB Output is correct
34 Correct 21 ms 54620 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 54364 KB Output is correct
2 Correct 7 ms 54364 KB Output is correct
3 Correct 7 ms 54444 KB Output is correct
4 Correct 7 ms 54488 KB Output is correct
5 Correct 6 ms 54364 KB Output is correct
6 Correct 7 ms 54364 KB Output is correct
7 Correct 7 ms 54364 KB Output is correct
8 Correct 7 ms 54364 KB Output is correct
9 Correct 8 ms 54364 KB Output is correct
10 Correct 8 ms 54620 KB Output is correct
11 Correct 8 ms 54620 KB Output is correct
12 Correct 7 ms 54620 KB Output is correct
13 Correct 7 ms 54564 KB Output is correct
14 Correct 8 ms 54616 KB Output is correct
15 Correct 8 ms 54616 KB Output is correct
16 Correct 7 ms 54620 KB Output is correct
17 Correct 10 ms 54620 KB Output is correct
18 Correct 7 ms 54620 KB Output is correct
19 Correct 7 ms 54620 KB Output is correct
20 Correct 8 ms 54620 KB Output is correct
21 Correct 7 ms 54620 KB Output is correct
22 Correct 7 ms 54616 KB Output is correct
23 Correct 8 ms 54620 KB Output is correct
24 Correct 9 ms 54560 KB Output is correct
25 Correct 8 ms 54620 KB Output is correct
26 Correct 8 ms 54620 KB Output is correct
27 Correct 8 ms 54780 KB Output is correct
28 Correct 9 ms 54620 KB Output is correct
29 Correct 13 ms 54676 KB Output is correct
30 Correct 9 ms 54620 KB Output is correct
31 Correct 11 ms 54620 KB Output is correct
32 Correct 10 ms 54620 KB Output is correct
33 Correct 20 ms 54576 KB Output is correct
34 Correct 20 ms 54620 KB Output is correct
35 Correct 19 ms 55384 KB Output is correct
36 Correct 10 ms 54616 KB Output is correct
37 Correct 26 ms 55324 KB Output is correct
38 Correct 27 ms 55500 KB Output is correct
39 Correct 25 ms 55384 KB Output is correct
40 Correct 27 ms 55388 KB Output is correct
41 Correct 24 ms 55388 KB Output is correct
42 Correct 10 ms 55004 KB Output is correct
43 Correct 10 ms 55004 KB Output is correct
44 Correct 10 ms 55044 KB Output is correct
45 Correct 66 ms 56100 KB Output is correct
46 Correct 65 ms 55900 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 54364 KB Output is correct
2 Correct 7 ms 54364 KB Output is correct
3 Correct 7 ms 54508 KB Output is correct
4 Correct 7 ms 54364 KB Output is correct
5 Correct 7 ms 54616 KB Output is correct
6 Correct 7 ms 54360 KB Output is correct
7 Correct 7 ms 54364 KB Output is correct
8 Correct 7 ms 54364 KB Output is correct
9 Correct 7 ms 54364 KB Output is correct
10 Correct 7 ms 54620 KB Output is correct
11 Correct 8 ms 54616 KB Output is correct
12 Correct 7 ms 54620 KB Output is correct
13 Correct 7 ms 54620 KB Output is correct
14 Correct 8 ms 54620 KB Output is correct
15 Correct 8 ms 54604 KB Output is correct
16 Correct 7 ms 54616 KB Output is correct
17 Correct 10 ms 54616 KB Output is correct
18 Correct 7 ms 54620 KB Output is correct
19 Correct 7 ms 54528 KB Output is correct
20 Correct 7 ms 54616 KB Output is correct
21 Correct 7 ms 54620 KB Output is correct
22 Correct 7 ms 54620 KB Output is correct
23 Correct 8 ms 54620 KB Output is correct
24 Correct 9 ms 54564 KB Output is correct
25 Correct 9 ms 54620 KB Output is correct
26 Correct 9 ms 54620 KB Output is correct
27 Correct 8 ms 54492 KB Output is correct
28 Correct 9 ms 54620 KB Output is correct
29 Correct 13 ms 54620 KB Output is correct
30 Correct 9 ms 54616 KB Output is correct
31 Correct 11 ms 54620 KB Output is correct
32 Correct 9 ms 54620 KB Output is correct
33 Correct 20 ms 54620 KB Output is correct
34 Correct 20 ms 54812 KB Output is correct
35 Correct 19 ms 55388 KB Output is correct
36 Correct 10 ms 54620 KB Output is correct
37 Correct 26 ms 55256 KB Output is correct
38 Correct 25 ms 55388 KB Output is correct
39 Correct 25 ms 55432 KB Output is correct
40 Correct 25 ms 55384 KB Output is correct
41 Correct 26 ms 55384 KB Output is correct
42 Correct 10 ms 55004 KB Output is correct
43 Correct 11 ms 55004 KB Output is correct
44 Correct 10 ms 55044 KB Output is correct
45 Correct 66 ms 55896 KB Output is correct
46 Correct 65 ms 55900 KB Output is correct
47 Correct 92 ms 55896 KB Output is correct
48 Correct 11 ms 55132 KB Output is correct
49 Correct 13 ms 55132 KB Output is correct
50 Correct 12 ms 54876 KB Output is correct
51 Correct 48 ms 56148 KB Output is correct
52 Correct 53 ms 56148 KB Output is correct
53 Correct 21 ms 55640 KB Output is correct
54 Correct 8 ms 54364 KB Output is correct
55 Correct 9 ms 54364 KB Output is correct
56 Correct 14 ms 55644 KB Output is correct
57 Correct 77 ms 54736 KB Output is correct
58 Correct 14 ms 55008 KB Output is correct
59 Correct 18 ms 54984 KB Output is correct
60 Correct 22 ms 55008 KB Output is correct
61 Correct 19 ms 55004 KB Output is correct
62 Correct 44 ms 55644 KB Output is correct
63 Correct 42 ms 59600 KB Output is correct
64 Correct 43 ms 59344 KB Output is correct
65 Correct 331 ms 58444 KB Output is correct
66 Correct 867 ms 59600 KB Output is correct
67 Correct 870 ms 58324 KB Output is correct