Submission #1111825

#	Time	Username	Problem	Language	Result	Execution time	Memory
1111825		steveonalex	Seats (IOI18_seats)	C++17	11 / 100	4058 ms	40780 KiB

seats

#include <bits/stdc++.h>
#include "seats.h"

using namespace std;

typedef long long ll;
typedef unsigned int ul;
typedef unsigned long long ull;

#define MASK(i) (1ULL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()

ll gcd(ll a, ll b){return __gcd(a, b);}
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}

ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ull mask){return __builtin_ctzll(mask);}
int logOf(ull mask){return 63 - __builtin_clzll(mask);}

mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}

template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }

template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }

template <class T>
    void printArr(T the_array_itself, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: the_array_itself) out << item << separator;
        out << finish;
    }

template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

const int INF = 1e9 + 69;

int h, w;
vector<int> r, c;

void give_initial_chart(int H, int W, vector<int> R, vector<int> C) {
    h = H, w = W;
    r = R; c = C;
}

int swap_seats(int a, int b) {
    swap(r[a], r[b]); swap(c[a], c[b]);
    int l1 = INF, r1 = -INF, l2 = INF, r2 = -INF;
    int cnt = 0;
    for(int i = 0; i < h * w; ++i){
        minimize(l1, r[i]); minimize(l2, c[i]);
        maximize(r1, r[i]); maximize(r2, c[i]);
        if (i + 1 == (r1 - l1 + 1) * (r2 - l2 + 1)) cnt++;
    }
    return cnt;
}


// int main(void){
//     ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

//     clock_t start = clock();

//     int n, m;cin >> n >> m;
//     vector<int> r(n * m), c(n*m);
//     for(int i = 0; i < n*m; ++i) cin >> r[i] >> c[i];

//     give_initial_chart(n, m, r, c);
//     int q; cin >> q;
//     while(q--){
//         int u, v; cin >> u >> v;
//         cout << swap_seats(u, v) << "\n";
//     }

//     cerr << "Time elapsed: " << clock() - start << " ms!\n";

//     return 0;
// }

• Subtask 1: 5 / 5
• Subtask 2: 6 / 6
• Subtask 3: 0 / 20
• Subtask 4: 0 / 6
• Subtask 5: 0 / 33
• Subtask 6: 0 / 30