제출 #1251865

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1251865		Bui_Quoc_Cuong	Gift Exchange (JOI24_ho_t4)	C++20	50 / 100	2594 ms	4864 KiB

Main

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

typedef long long ll;
typedef pair<int, int> ii;
typedef pair<int, ii> iii;

template<class T>
    bool minimize(T &a, const T &b) {
        if (a > b) return a = b, true;
        return false;
    }

template<class T>
    bool maximize(T &a, const T &b) {
        if (a < b) return a = b, true;
        return false;
    }

#define FOR(i,a,b) for(int i=(a); i<=(b); ++i)
#define FORD(i,a,b) for(int i=(a); i>=(int)b; i--)
#define MASK(i) (1LL << (i))
#define BIT(S, i) (((S) >> (i)) & 1)
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define all(x) x.begin(), x.end()

const int MOD = 1e9 + 7;
const int oo = 1e9 + 29032008;
const ll inf = 1e18 + 29032008;
const int N = 1e6 + 5;

int n, q;
int a[N], b[N];

void init(void) {
    cin >> n;
    FOR(i, 1, n) cin >> a[i];
    FOR(i, 1, n) cin >> b[i];
    cin >> q;
}

// Hint : chuyển [bi, ai] thành [L ... R] rồi tìm cách nối

namespace sub1 {

    void solve() {
        FOR(i, 1, q) {
            int l, r; cin >> l >> r;
            vector <pair <int, int>> sweeps;
            FOR(j, l, r) {
                sweeps.push_back(make_pair(a[j], - j));
                sweeps.push_back(make_pair(b[j], j));
            }
            sort(all(sweeps));
            int cnt = 0;
            bool have_ans = true;   
            FOR(j, 0, (int)sweeps.size() - 1) {
                cnt+= (sweeps[j].se < 0 ? - 1 : 1);
                if (cnt == 0 && sweeps[j - 1].se == - sweeps[j].se) {
                    have_ans = false;
                    break;
                }
            }
            cout << (have_ans ? "Yes" : "No") << "\n";
        }
    }
}

void process(void) {    
    sub1 :: solve();
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    #define task "kieuoanh"
    if (fopen(task".inp", "r")) {
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    int tc = 1;
//    cin >> tc;
    while (tc--) {
        init();
        process();
    }
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:81:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   81 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:82:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 31 / 31
• Subtask 5: 0 / 8
• Subtask 6: 0 / 12
• Subtask 7: 0 / 18
• Subtask 8: 0 / 12