제출 #1346316

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1346316		retarde	Circle Passing (EGOI24_circlepassing)	C++20	100 / 100	267 ms	47548 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, q;
int st(int u, int v) {return min(abs(u - v), 2 * n - abs(u - v));}
int ft(int x) {
    while (x >= 2*n) x -= n;
    while (x < 0) x += n;
    return x; 
}

inline void solve() {
    cin >> n >> m >> q;
    set<int> f;
    for (int i = 0; i < m; i++) {
        int k; cin >> k;
        f.insert(k); f.insert(k+n);
    }   
    while (q--) {
        int u, v;
        cin >> u >> v;
        int ans = st(u, v);
        int r;
        if (*f.rbegin() < u) {
            // nothing bigger
            r = *f.begin();
        } else {
            // something bigger
            r = *f.lower_bound(u);
        }

        int l;
        if (*f.begin() > u) {
            // nothing smaller
            l = *f.rbegin();
        } else {
            // sopmething smallest
            l = *(--f.upper_bound(u));
        }

        ans = min(ans, st(u,l)+1+st((l < n ? l+n : l-n),v));
        ans = min(ans, st(u,r)+1+st((r < n ? r+n : r-n),v));
        cout << ans << '\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();
    }
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'void setIO(std::string)':
Main.cpp:77:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:78:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 20 / 20
• Subtask 3: 22 / 22
• Subtask 4: 17 / 17
• Subtask 5: 27 / 27