Submission #1346574

#	Time	Username	Problem	Language	Result	Execution time	Memory
1346574		retarde	Make them Meet (EGOI24_makethemmeet)	C++20	0 / 100	0 ms	344 KiB

Main

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

#define pb push_back
#define pf push_front
#define mp make_pair
#define fi first
#define se second
#define int long long
#define all(x) (x).begin(), (x).end()

typedef long double ld;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<vector<bool>> vvb;
typedef vector<vector<ll>> vvll;
typedef vector<string> vs;
typedef vector<vector<string>> vvs;
typedef vector<char> vc;
typedef vector<vector<char>> vvc;
typedef map<int, int> mii;
typedef unordered_map<int, int> umii;

const int mod = 1e9 + 7;
const int inf = INTMAX_MAX;
const bool tc = false;

int n, m;

void color(vi &x) {
    set<int> nin;
    for (int i = 1; i <= n; i++) nin.insert(i);
    for (auto &y : x) nin.erase(y);

    for (int i = 0; i < n; i++) {
        if (x[i]) continue;
        x[i] = *nin.begin();
        nin.erase(nin.begin());
    }
}

inline void solve() {
    cin >> n >> m;
    vvi adj(n); for (int i = 0; i < m; i++) {
        int u, v;
        cin >> u >> v;
        adj[u].pb(v);
        adj[v].pb(u);
    }

    vvi ops;
    for (int i = 0; i < n; i++) {
        for (int i = 0; i < n-1; i++) {
            vi test(n);
            test[i] = test[i + 1] = 1;
            ops.pb(test);
        }
    }
    cout << ops.size() << '\n';
    for (auto &y : ops) {
        for (auto &x : y) cout << x << " ";
        cout << '\n';
    }
}

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

signed main() {
    ios::sync_with_stdio(false);
    cout.tie(0);
    cin.tie(0);
    //setIO();

    int t = 1;
    if (tc) {
        cin >> t;
    }

    while (t--) {
        solve();
    }
}

Compilation message (stderr)

Main.cpp: In function 'void setIO(std::string)':
Main.cpp:72:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:73:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 13
• Subtask 3: 0 / 11
• Subtask 4: 0 / 36
• Subtask 5: 0 / 30