Submission #799449

#	Time	Username	Problem	Language	Result	Execution time	Memory
799449		RecursiveCo	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	22 / 100	37 ms	2164 KiB

skyscraper

// CF template, version 3.0

#include <bits/stdc++.h>

using namespace std;

#define improvePerformance ios_base::sync_with_stdio(false); cin.tie(0)
#define getTest int t; cin >> t
#define eachTest for (int _var=0;_var<t;_var++)
#define get(name) int (name); cin >> (name)
#define out(o) cout << (o)
#define getList(cnt, name) vector<int> (name); for (int _=0;_<(cnt);_++) { get(a); (name).push_back(a); }
#define sortl(name) sort((name).begin(), (name).end())
#define rev(name) reverse((name).begin(), (name).end())
#define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
#define decision(b) if (b){out("YES");}else{out("NO");}

#define int long long int

signed main() {
    improvePerformance;

    get(n);
    get(m);
    vector<pair<int, int>> doges;
    vector<vector<bool>> has(n, vector<bool>(n + 1, false));
    vector<bool> one(n, false);
    vector<vector<int>> div(n + 1);
    for (int d = 1; d <= n; d++) {
        for (int j = d; j <= n; j += d) {
            div[j].push_back(d);
        }
    }
    forto(m, i) {
        get(b);
        get(p);
        doges.push_back({b, p});
        has[b][p] = true;
        one[b] = true;
    }
    vector<vector<pair<int, int>>> adjList(n);
    forto(n, i) {
        forto(n, j) {
            if (i == j) continue;
            if (!one[j]) continue;
            int maxdiv = -1;
            int dist = abs(j - i);
            for (int divisor: div[dist]) {
                if (has[i][divisor]) maxdiv = divisor;
            }
            if (maxdiv != -1) adjList[i].push_back({j, dist / maxdiv});
        }
    }
    vector<int> shortest(n, 1e18);
    vector<bool> visited(n, false);
    priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>> pq;
    int start = doges[0].first;
    pq.push({0, start});
    while (!pq.empty()) {
        auto top = pq.top();
        int dist = top.first;
        int node = top.second;
        pq.pop();
        if (visited[node]) continue;
        visited[node] = true;
        shortest[node] = min(shortest[node], dist);
        for (auto con: adjList[node]) {
            int dest = con.first;
            int weight = con.second;
            if (!visited[dest]) pq.push({shortest[node] + weight, dest});
        }
    }
    int pos = doges[1].first;
    if (shortest[pos] == 1e18) out(-1);
    else out(shortest[pos]);
}

Compilation message (stderr)

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:10:23: warning: unnecessary parentheses in declaration of 'n' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
skyscraper.cpp:23:5: note: in expansion of macro 'get'
   23 |     get(n);
      |     ^~~
skyscraper.cpp:10:23: warning: unnecessary parentheses in declaration of 'm' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
skyscraper.cpp:24:5: note: in expansion of macro 'get'
   24 |     get(m);
      |     ^~~
skyscraper.cpp:15:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
skyscraper.cpp:34:5: note: in expansion of macro 'forto'
   34 |     forto(m, i) {
      |     ^~~~~
skyscraper.cpp:10:23: warning: unnecessary parentheses in declaration of 'b' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
skyscraper.cpp:35:9: note: in expansion of macro 'get'
   35 |         get(b);
      |         ^~~
skyscraper.cpp:10:23: warning: unnecessary parentheses in declaration of 'p' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
skyscraper.cpp:36:9: note: in expansion of macro 'get'
   36 |         get(p);
      |         ^~~
skyscraper.cpp:15:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
skyscraper.cpp:42:5: note: in expansion of macro 'forto'
   42 |     forto(n, i) {
      |     ^~~~~
skyscraper.cpp:15:35: warning: unnecessary parentheses in declaration of 'j' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
skyscraper.cpp:43:9: note: in expansion of macro 'forto'
   43 |         forto(n, j) {
      |         ^~~~~

• Subtask 1: 10 / 10
• Subtask 2: 12 / 12
• Subtask 3: 0 / 14
• Subtask 4: 0 / 21
• Subtask 5: 0 / 43