Submission #717597

#	Time	Username	Problem	Language	Result	Execution time	Memory
717597		hafo	Crocodile's Underground City (IOI11_crocodile)	C++14	Compilation error	0 ms	0 KiB

crocodile

int travel_plan(int n, int m, int r[][2], int l[], int k, int p[])
{
    ll f[n][2];
    int trace[n][2];
    priority_queue<pair<long long, int>, vector<pair<long long, int>>, greater<pair<long long, int>>> q;
    memset(f, 0x3f, sizeof f);
    memset(trace, -1, sizeof trace);
    for(int i = 0; i < k; i++) {
        f[p[i]][0] = 0;
        q.push({0, p[i]});
    }
    vector<pair<int, int>> g[n];

    for(int i = 0; i < m; i++) {
        int u = r[i][0], v = r[i][1];
        g[u].push_back({v, l[i]});
        g[v].push_back({u, l[i]});
    }

    while(!q.empty()) {
        int u = q.top().second;
        long long fu = q.top().first;
        q.pop();

        if(fu > f[u][1]) continue;
        for(auto e:g[u]) {
            int v = e.first, w = e.second;
            if(f[v][0] == 0) continue;
            if(trace[u][0] == v || trace[u][1] == v) continue;
            if(f[v][0] > fu + w) {
                f[v][1] = f[v][0];
                trace[v][1] = trace[v][0];
                f[v][0] = fu + w;
                trace[v][0] = u;
                q.push({fu + w, v});
            } else if(f[v][1] > fu + w) {
                f[v][1] = fu + w;
                trace[v][1] = u;
                q.push({fu + w, v});
            }
        }
    }

    int res = 0, u = 0;
    vector<int> path;
    while(trace[u][1] != -1) {
        path.pb(u);
        u = trace[u][1];
    }
    path.pb(u);
    for(int i = 0; i < (int) path.size() - 1; i++) {
        int u = path[i], v = path[i + 1];
        for(auto e:g[u]) {
            if(e.first == v) res += e.second;
        }
    }
    return res;
}

Compilation message (stderr)

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:3:5: error: 'll' was not declared in this scope; did you mean 'l'?
    3 |     ll f[n][2];
      |     ^~
      |     l
crocodile.cpp:5:5: error: 'priority_queue' was not declared in this scope
    5 |     priority_queue<pair<long long, int>, vector<pair<long long, int>>, greater<pair<long long, int>>> q;
      |     ^~~~~~~~~~~~~~
crocodile.cpp:5:20: error: 'pair' was not declared in this scope
    5 |     priority_queue<pair<long long, int>, vector<pair<long long, int>>, greater<pair<long long, int>>> q;
      |                    ^~~~
crocodile.cpp:5:25: error: expected primary-expression before 'long'
    5 |     priority_queue<pair<long long, int>, vector<pair<long long, int>>, greater<pair<long long, int>>> q;
      |                         ^~~~
crocodile.cpp:6:12: error: 'f' was not declared in this scope
    6 |     memset(f, 0x3f, sizeof f);
      |            ^
crocodile.cpp:6:5: error: 'memset' was not declared in this scope
    6 |     memset(f, 0x3f, sizeof f);
      |     ^~~~~~
crocodile.cpp:1:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
  +++ |+#include <cstring>
    1 | int travel_plan(int n, int m, int r[][2], int l[], int k, int p[])
crocodile.cpp:10:9: error: 'q' was not declared in this scope
   10 |         q.push({0, p[i]});
      |         ^
crocodile.cpp:12:5: error: 'vector' was not declared in this scope
   12 |     vector<pair<int, int>> g[n];
      |     ^~~~~~
crocodile.cpp:12:17: error: expected primary-expression before 'int'
   12 |     vector<pair<int, int>> g[n];
      |                 ^~~
crocodile.cpp:16:9: error: 'g' was not declared in this scope
   16 |         g[u].push_back({v, l[i]});
      |         ^
crocodile.cpp:20:12: error: 'q' was not declared in this scope
   20 |     while(!q.empty()) {
      |            ^
crocodile.cpp:26:20: error: 'g' was not declared in this scope
   26 |         for(auto e:g[u]) {
      |                    ^
crocodile.cpp:30:31: error: 'w' was not declared in this scope
   30 |             if(f[v][0] > fu + w) {
      |                               ^
crocodile.cpp:45:12: error: expected primary-expression before 'int'
   45 |     vector<int> path;
      |            ^~~
crocodile.cpp:47:9: error: 'path' was not declared in this scope
   47 |         path.pb(u);
      |         ^~~~
crocodile.cpp:50:5: error: 'path' was not declared in this scope
   50 |     path.pb(u);
      |     ^~~~
crocodile.cpp:53:20: error: 'g' was not declared in this scope
   53 |         for(auto e:g[u]) {
      |                    ^
crocodile.cpp:54:27: error: 'v' was not declared in this scope
   54 |             if(e.first == v) res += e.second;
      |                           ^