Submission #737750

#	Time	Username	Problem	Language	Result	Execution time	Memory
737750		rominanafu	Tropical Garden (IOI11_garden)	C++11	Compilation error	0 ms	0 KiB

garden

#include "garden.h"
#include "gardenlib.h"
#include <bits/stdc++.h>
#define pii pair<int,int>

using namespace std;

pii sig[150005];
int caso, resp;

int cant_rutas(int ant, int act, int sum, int fin) {
    if (act == fin && sum == caso)
        return 1;
    if (sum > caso)
        return 0;
    int r=0;
    if (sig[act].first != ant || sig[act].second == -1)
        r = cant_rutas(act, sig[act].first, sum+1, fin);
    else
        r = cant_rutas(act, sig[act].second, sum+1, fin);
    return r;
}

void count_routes(int n, int m, int fin, int R[][2], int queries, int G[])
{
    memset(sig, -1, sizeof(sig));
    int a, b;
    for(int i=0; i<m; i++) {
        a = R[i][0];
        b = R[i][1];
        if (sig[a].first == -1) {
            sig[a].first = b;
        } else if (sig[a].second == -1) {
            sig[a].second = b;
        }
        if (sig[b].first == -1) {
            sig[b].first = a;
        } else if (sig[b].second == -1) {
            sig[b].second = a;
        }
    }
    for(int i=0; i<queries; i++) {
        caso = G[i];
        resp = 0;
        for(int i=0; i<n; i++) {
            resp += cant_rutas(-1, i, 0);
        }
        answer(resp);
    }
    return 0;
}

Compilation message (stderr)

garden.cpp: In function 'void count_routes(int, int, int, int (*)[2], int, int*)':
garden.cpp:26:32: warning: 'void* memset(void*, int, size_t)' writing to an object of type 'struct std::pair<int, int>' with no trivial copy-assignment [-Wclass-memaccess]
   26 |     memset(sig, -1, sizeof(sig));
      |                                ^
In file included from /usr/include/c++/10/bits/stl_algobase.h:64,
                 from /usr/include/c++/10/bits/char_traits.h:39,
                 from /usr/include/c++/10/ios:40,
                 from /usr/include/c++/10/istream:38,
                 from /usr/include/c++/10/sstream:38,
                 from /usr/include/c++/10/complex:45,
                 from /usr/include/c++/10/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:54,
                 from garden.cpp:3:
/usr/include/c++/10/bits/stl_pair.h:211:12: note: 'struct std::pair<int, int>' declared here
  211 |     struct pair
      |            ^~~~
garden.cpp:46:40: error: too few arguments to function 'int cant_rutas(int, int, int, int)'
   46 |             resp += cant_rutas(-1, i, 0);
      |                                        ^
garden.cpp:11:5: note: declared here
   11 | int cant_rutas(int ant, int act, int sum, int fin) {
      |     ^~~~~~~~~~
garden.cpp:50:12: error: return-statement with a value, in function returning 'void' [-fpermissive]
   50 |     return 0;
      |            ^