Submission #746162

#	Time	Username	Problem	Language	Result	Execution time	Memory
746162		idas	Fire drill (LMIO18_sauga)	C++17	56.79 / 100	39 ms	2976 KiB

sauga

#include <bits/stdc++.h>
#define FOR(i, begin, end) for(int i = (begin); i < (end); i++)
#define FAST_IO ios_base::sync_with_stdio(0); cin.tie(nullptr); cout.tie(nullptr)
#define F first
#define S second
#define PB push_back
#define MP make_pair
#define SZ(x) ((int)((x).size()))
#define LE(vec) vec[vec.size()-1]
#define TSTS int t; cin >> t; while(t--)solve()

const int INF = 1e9;
const long long LINF = 1e18;
const long double PI = asin(1)*2;
const int MOD = 1e9+7;

using namespace std;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef map<int, int> mii;
typedef long long ll;
typedef long double ld;

void setIO()
{
    FAST_IO;
}

void setIO (string s) {
    setIO();
 	freopen((s+".in").c_str(),"r",stdin);
 	freopen((s+".out").c_str(),"w",stdout);
}

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int N=1e3+10;
vi row, ad[N];
int lp[N];
bool v[N];

void dfs(int u)
{
    v[u]=true;
    for(auto it : ad[u]){
        if(!v[it]){
            dfs(it);
        }
    }
    row.PB(u);
}

int main()
{
    setIO();
    int t, n, s;
    cin >> t >> n >> s;
    FOR(i, 0, n)
    {
        int x;
        cin >> x;
        FOR(j, 0, x)
        {
            int b;
            cin >> b;
            ad[i].PB(b-1);
            lp[b-1]++;
        }
    }
    vector<pii> inf;
    FOR(i, 0, n)
    {
        inf.PB({lp[i], i});
    }

    sort(inf.begin(), inf.end());

    shuffle(inf.begin(), inf.end(), rng);

    FOR(i, 0, n)
    {
        shuffle(ad[i].begin(), ad[i].end(), rng);
    }

    for(auto[x, y] : inf){
        if(!v[y]){
            dfs(y);
        }
    }

    for(auto b : row){
        cout << b+1 << "\n";
    }
}

Compilation message (stderr)

sauga.cpp: In function 'void setIO(std::string)':
sauga.cpp:31:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |   freopen((s+".in").c_str(),"r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sauga.cpp:32:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |   freopen((s+".out").c_str(),"w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 56.7886146714 / 100