Submission #1084176

#	Time	Username	Problem	Language	Result	Execution time	Memory
1084176		RiverFlow	Garden (JOI23_garden)	C++14	6 / 100	3060 ms	8532 KiB

garden

#include <bits/stdc++.h>

#define nl "\n"
#define no "NO"
#define yes "YES"
#define fi first
#define se second
#define vec vector
#define task "main"
#define _mp make_pair
#define ii pair<int, int>
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define evoid(val) return void(std::cout << val)
#define FOR(i, a, b) for(int i = (a); i <= (b); ++i)
#define FOD(i, b, a) for(int i = (b); i >= (a); --i)
#define unq(x) sort(all(x)); x.resize(unique(all(x)) - x.begin())

using namespace std;

template<typename U, typename V> bool maxi(U &a, V b) {
    if (a < b) { a = b; return 1; } return 0;
}
template<typename U, typename V> bool mini(U &a, V b) {
    if (a > b) { a = b; return 1; } return 0;
}

const int N = (int)5e5 + 9;
const int mod = (int)1e9 + 7;

void prepare(); void main_code();

int main() {
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    if (fopen(task".inp", "r")) {
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    const bool MULTITEST = 0; prepare();
    int num_test = 1; if (MULTITEST) cin >> num_test;
    while (num_test--) { main_code(); }
}

void prepare() {};

int n, m, d;
int p[N], q[N], r[N], s[N];

bool type1(int x, int y, int u, int v, int i) {
    int a = (x - p[i]) / d;
    if (p[i] + a * d < x) ++a;
    if (p[i] + a * d > u) return 0;
    int b = (y - q[i]) / d;
    if (q[i] + b * d < y) ++b;
    if (q[i] + b * d > v) return 0;
    return 1;
}
bool type2(int x, int y, int u, int v, int i) {
    int a = (x - r[i]) / d;
    if (r[i] + a * d < x) ++a;
    if (r[i] + a * d <= u)
        return 1;
    int b = (y - s[i]) / d;
    if (s[i] + b * d < y) ++b;
    if (s[i] + b * d <= v)
        return 1;
    return 0;
}
void main_code() {
    cin >> n >> m >> d;
    map<ii, int> mp;
    for(int i = 1; i <= n; ++i) {
        cin >> p[i] >> q[i];
    }
    for(int i = 1; i <= m; ++i) {
        cin >> r[i] >> s[i];
    }
    // (0 -> m + n - 1) -> 2 ^ (m + n) - 1

    int ans = INT_MAX;
    FOR(x, -d, d)
    FOR(y, -d, d) {
        FOR(u, x, d)
        FOR(v, y, d) if ( (u-x+1) * (v-y+1) < ans ) {
            bool check = 1;
            FOR(i, 1, n) {
                check &= type1(x, y, u, v, i);
            }
            FOR(i, 1, m) {
                check &= type2(x, y, u, v, i);
            }
            if (check) {
                ans = (u-x+1)*(v-y+1);
            }
        }
    }
    cout << ans;
}


/*     Let the river flows naturally     */

Compilation message (stderr)

garden.cpp: In function 'int main()':
garden.cpp:36:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
garden.cpp:37:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 15
• Subtask 2: 6 / 6
• Subtask 3: 0 / 8
• Subtask 4: 0 / 16
• Subtask 5: 0 / 30
• Subtask 6: 0 / 25