提出 #41542299

---

ソースコード 拡げる

// Om Namah Shivaya

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x, y) ((x + y - 1) / (y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i, n) for(int i = 0; i < n; ++i)
#define rep1(i, n) for(int i = 1; i <= n; ++i)
#define rev(i, s, e) for(int i = s; i >= e; --i)
#define trav(i, a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a, b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a, b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*



*/

const int MOD = 1e9 + 7;
const int N = 3e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;

set<ll> adj[N];

void solve(int test_case)
{
    ll n, q; cin >> n >> q;
    vector<ll> deg(n + 5);
    ll good = n;

    while (q--) {
        ll t; cin >> t;
        if (t == 1) {
            ll u, v; cin >> u >> v;
            if (!deg[u]) good--;
            if (!deg[v]) good--;
            deg[u]++, deg[v]++;
            adj[u].insert(v), adj[v].insert(u);
        }
        else {
            ll u; cin >> u;
            if (deg[u]) {
                trav(v, adj[u]) {
                    adj[v].erase(u);
                    deg[v]--;
                    if (!deg[v]) good++;
                }

                adj[u].clear();
                deg[u] = 0;
                good++;
            }
        }

        cout << good << endl;
    }
}

int main()
{
    fastio;

    int t = 1;
    // cin >> t;

    rep1(i, t) {
        solve(i);
    }

    return 0;
}

提出情報

コンパイルエラー

./Main.cpp: In function ‘void solve(int)’:
./Main.cpp:64:16: warning: unused parameter ‘test_case’ [-Wunused-parameter]
   64 | void solve(int test_case)
      |            ~~~~^~~~~~~~~

ジャッジ結果