Submission #1249353

#	Time	Username	Problem	Language	Result	Execution time	Memory
1249353		CrabCNH	Snowball (JOI21_ho_t2)	C++20	100 / 100	63 ms	11452 KiB

Main

#include <bits/stdc++.h>

#define task     "BriantheCrab"

#define int    long long
#define pii    pair <int, int>
#define fi     first
#define se     second
#define szf    sizeof
#define sz(s)  (int)((s).size())
#define all(v) (v).begin(), (v).end()

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;

using namespace std;

template <class T> void minimize (T &t, T f) {if (t > f) t = f;}
template <class T> void maximize (T &t, T f) {if (t < f) t = f;}

const int maxN = 2e5 + 5;
const int inf = 1e18 + 7;
const int mod = 1e9 + 7;

// khong tu code thi khong kha len duoc dau

int a[maxN];
int l[maxN], r[maxN];
int turn[maxN];
int res[maxN];

void solve () {
    int n, q;
    cin >> n >> q;
    for (int i = 1; i <= n; i ++) {
        cin >> a[i];
    }
    int cur = 0;
    vector <int> pos;
    for (int i = 1; i <= q; i ++) {
        int w;
        cin >> w;
        cur += w;
        r[i] = r[i - 1];
        l[i] = l[i - 1];
        if (cur > 0) {
            turn[i] = 1;
            maximize (r[i], cur);
        }
        else {
            turn[i] = 0;
            maximize (l[i], -cur);
        }
        pos.push_back (l[i] + r[i]);
    }
    // cout << "gay "; 
    // for (int i = 1; i <= q; i ++) {
        // cout << l[i] << ' ';
    // }
    // cout << '\n';
    // cout << "gay "; 
    // for (int i = 1; i <= q; i ++) {
        // cout << r[i] << ' ';
    // }
    // cout << '\n';
    // cout << "gay "; 
    // for (auto it : pos) {
        // cout << it << ' ';
    // }
    // cout << '\n';
    pos.push_back (inf);
    res[1] += l[q];
    res[n] += r[q];
    for (int i = 2; i <= n; i ++) {
        // dis <= l[i] + r[i]
        auto id = upper_bound (all (pos), abs (a[i] - a[i - 1]) - 1) - pos.begin ();
        if (id >= q) {
            res[i - 1] += r[q];
            res[i] += l[q];
            continue;
        }
        //cout << "bruh " << i << ' ' << i - 1 << ' ' << id + 1 << '\n';
        if (turn[id + 1] == 1) {
            // if (i == 2) {
                // cout << "gay";
            // }
            res[i - 1] += abs (a[i] - a[i - 1]) - l[id + 1];
            res[i] += l[id + 1];
        }
        else {
            res[i - 1] += r[id + 1];
            res[i] += abs (a[i] - a[i - 1]) - r[id + 1];
        }
    }
    for (int i = 1; i <= n; i ++) {
        cout << res[i] << '\n';
    }
    return;
}

signed main () {
    cin.tie (nullptr) -> sync_with_stdio (false);
    if (fopen (task".inp", "r")) {
        freopen (task".inp", "r", stdin);
        freopen (task".out", "w", stdout);
    }
    int t = 1;
    //cin >> t;
    while (t --) {
        solve ();
    } 
    return 0;
}
// thfv

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:105:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  105 |         freopen (task".inp", "r", stdin);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:106:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  106 |         freopen (task".out", "w", stdout);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 33 / 33
• Subtask 2: 67 / 67