Submission #1301125

#	Time	Username	Problem	Language	Result	Execution time	Memory
1301125		sano	Connecting Supertrees (IOI20_supertrees)	C++20	Compilation error	0 ms	0 KiB

supertrees

// Source: https://usaco.guide/general/io
#include <iostream>  // cin, cout
#include <vector>    // vector
#include <string>    // string
#include "supertrees.h"

#define vec vector
#define mod 1000000007
#define For(i,n) for(int i = 0; i < n; i++)
using namespace std;


int construct(vec<vec<int>>p){
    int n = p.size();
    vec<vec<int>> odp(n, vec<int>(n));
    vec<set<int>> comp;
    vec<int> kde(n, -1);
    For(i, n){
        int zakl = 0;
        if(kde[i] == -1){
            set<int> s;
            s.insert(i);
            comp.push_back(s);
            kde[i] = comp.size() - 1;
            zakl = 1;
        }
        int poc = 0;
        For(j, n){
            if(p[i][j] == 0) continue;
            poc++;
            if(kde[j] != kde[i]){
                return 0;
            }
            if(kde[j] == -1){
                if(zakl){
                    kde[j] = kde[i];
                    comp[kde[i]].insert(j);
                }
                else{
                    return 0;
                }
            }
        }
    }
    For(i, comp.size()){
        vec<int> obsah;
        for(auto j : comp[i]){
            obsah.push_back(j);
        }
        For(j, obsah.size() - 1){
            odp[obsah[j]][obsah[j+1]] = 1;
            odp[obsah[j+1]][obsah[j]] = 1;
        }
    }
    build(odp);
    return 1;
}

/*
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
	
    return 0;
}*/

Compilation message (stderr)

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:16:9: error: 'set' was not declared in this scope
   16 |     vec<set<int>> comp;
      |         ^~~
supertrees.cpp:6:1: note: 'std::set' is defined in header '<set>'; did you forget to '#include <set>'?
    5 | #include "supertrees.h"
  +++ |+#include <set>
    6 | 
supertrees.cpp:16:16: error: template argument 1 is invalid
   16 |     vec<set<int>> comp;
      |                ^~
supertrees.cpp:16:16: error: template argument 2 is invalid
supertrees.cpp:21:17: error: expected primary-expression before 'int'
   21 |             set<int> s;
      |                 ^~~
supertrees.cpp:22:13: error: 's' was not declared in this scope
   22 |             s.insert(i);
      |             ^
supertrees.cpp:23:18: error: request for member 'push_back' in 'comp', which is of non-class type 'int'
   23 |             comp.push_back(s);
      |                  ^~~~~~~~~
supertrees.cpp:24:27: error: request for member 'size' in 'comp', which is of non-class type 'int'
   24 |             kde[i] = comp.size() - 1;
      |                           ^~~~
supertrees.cpp:37:25: error: invalid types 'int[__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type {aka int}]' for array subscript
   37 |                     comp[kde[i]].insert(j);
      |                         ^
supertrees.cpp:45:17: error: request for member 'size' in 'comp', which is of non-class type 'int'
   45 |     For(i, comp.size()){
      |                 ^~~~
supertrees.cpp:9:37: note: in definition of macro 'For'
    9 | #define For(i,n) for(int i = 0; i < n; i++)
      |                                     ^
supertrees.cpp:47:26: error: invalid types 'int[int]' for array subscript
   47 |         for(auto j : comp[i]){
      |                          ^