Submission #1073537

#	Time	Username	Problem	Language	Result	Execution time	Memory
1073537		blushingecchigirl	Connecting Supertrees (IOI20_supertrees)	C++17	Compilation error	0 ms	0 KiB

supertrees

#include <bits/stdc++.h>
using namespace std;
#define pb push_back

struct dsu {
    vector<int> parent, rank;
    int size;

    dsu(int sz) {
        size = sz;
        rank.assign(size, 1);
        parent.resize(size);
        for(int i = 0; i<size; i++) parent[i] = i;
    }
    int search(int v) {
        if(v == parent[v]) return v;
        return parent[v] = search(parent[v]);
    }
    void connect(int v, int u) {
        v = search(v);
        u = search(u);
        if(v == u) return;
        if(rank[v]>=rank[u]) parent[u] = v;
        else parent[v] = u;
        if(rank[v] == rank[u]) rank[v]++;
        return;
    }
};

void build(std::vector<std::vector<int>> b);
int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	bool ctr = 1;
    vector<vector<int>> b(n);
    for(int i = 0; i<n; i++) b[i].resize(n, 0);
    
    vector<int> a[n];
    dsu d = dsu(n);
    for(int i = 0; i<n; i++) {
        for(int j = 0; j<n; j++) {
            if(p[i][j]) d.connect(i, j);
        }
    }
    for(int i = 0; i<n; i++) {
        a[d.search(i)].pb(i);
    }
    for(int i = 0; i<n; i++) {
        if(a[i].size()<=1) continue;
        vector<int> tree, circle;
        for(int ii:a[i]) {
            bool t1 = 0;
            for(int j:a[i]) {
                if(ii == j) continue;
                if(p[ii][j] == 1) t1 = true;
            }
            if(t1) tree.pb(ii);
            else circle.pb(ii);
        }
        for(size_t ii = 1; ii<tree.size(); ii++) {
            b[tree[ii]][tree[ii-1]] = b[tree[ii-1]][tree[ii]] = 1;
        }
        if(tree.size()) circle.pb(tree[0]);
        for(size_t ii = 1; ii<circle.size(); ii++) {
            b[circle[ii]][circle[ii-1]] = b[circle[ii-1]][cirlce[ii]] = 1;
        }
        if(circle.size()>1) b[circle[0]][circle.back()] = b[cirlce.back()][circle[0]] = 1;
    }
	if(ctr) build(b);
	return ctr;
}

Compilation message (stderr)

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:64:59: error: 'cirlce' was not declared in this scope; did you mean 'circle'?
   64 |             b[circle[ii]][circle[ii-1]] = b[circle[ii-1]][cirlce[ii]] = 1;
      |                                                           ^~~~~~
      |                                                           circle
supertrees.cpp:66:61: error: 'cirlce' was not declared in this scope; did you mean 'circle'?
   66 |         if(circle.size()>1) b[circle[0]][circle.back()] = b[cirlce.back()][circle[0]] = 1;
      |                                                             ^~~~~~
      |                                                             circle