Submission #440009

#	Time	Username	Problem	Language	Result	Execution time	Memory
440009		elazarkoren	Colouring a rectangle (eJOI19_colouring)	C++17	20 / 100	370 ms	14532 KiB

colouring

#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#define chkmin(a, b) a = min(a, b)
#define x first
#define y second
using namespace std;
typedef long long ll;
typedef vector<ll> vi;
typedef vector<vi> vvi;
typedef pair<int, int> pii;
typedef vector<pii> vii;
typedef vector<bool> vb;
typedef vector<vb> vvb;

const ll infinity = 1e18;

int main() {
    int n, m;
    cin >> n >> m;
    vi dig1(m + n - 1), dig2(n + m - 1);
    ll sum2 = 0, sum1 = 0;
    for (int i = 0; i < m + n - 1; i++) {
        cin >> dig2[i];
        sum2 += dig2[i];
    }
    for (int i = 0; i < n + m - 1; i++) {
        cin >> dig1[i];
        sum1 += dig1[i];
    }
    ll sum = 0;
    for (int i = 0; i < 2 * n - 1; i += 2) sum += dig1[i];
    ll ans1 = sum;
    for (int i = 0; i < n; i += 2) {
        sum -= dig1[i] + dig1[2 * n - i - 2];
        if (i == n - 1) sum += dig1[i];
        sum += dig2[i + n - 1] + dig2[n - i - 1];
        if (!i) {
            sum -= dig2[n - 1];
        }
        chkmin(ans1, sum);
    }
    sum = 0;
    for (int i = 1; i < 2 * n - 1; i += 2) sum += dig1[i];
    ll ans2 = sum;
    for (int i = 1; i < n; i += 2) {
        sum -= dig1[i] + dig1[2 * n - i - 2];
        if (i == n - 1) sum += dig1[i];
        sum += dig2[i + n - 1] + dig2[n - i - 1];
        chkmin(ans2, sum);
    }
    cout << ans1 + ans2;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 20
• Subtask 5: 0 / 10
• Subtask 6: 20 / 20
• Subtask 7: 0 / 20