Submission #1097769

#	Time	Username	Problem	Language	Result	Execution time	Memory
1097769		thangdz2k7	Two Dishes (JOI19_dishes)	C++17	100 / 100	2982 ms	236416 KiB

dishes

// author : thembululquaUwU
// 3.9.2024

#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define endl '\n'

using namespace std;
using ll = long long;
using ii = pair <int, int>;
using vi = vector <int>;

const int N = 1e6 + 5;
const int mod = 1e9 + 7;

void maxl(auto &a, auto b) {a = max(a, b);}
void minl(auto &a, auto b) {a = min(a, b);}

int n, m;
ll a[N], b[N], s[N], t[N], p[N], q[N];
vi event[N];

const ll inf = 1e18;
ll Max[4 * N], lz[4 * N];

void update(int u, int v, ll val, bool op, int s = 1, int l = 0, int r = m){
    if (v < l || u > r) return;
    if (u <= l && r <= v){
        if (op) Max[s] += val, lz[s] += val;
        else maxl(Max[s], val);
        return;
    }

    int mid = l + r >> 1; if (!op) val -= lz[s];
    update(u, v, val, op, s << 1, l, mid);
    update(u, v, val, op, s << 1 | 1, mid + 1, r);
    Max[s] = max(Max[s << 1], Max[s << 1 | 1]) + lz[s];
}

ll get(int u, int v, int s = 1, int l = 0, int r = m){
    if (v < l || u > r) return -inf;
    if (u <= l && r <= v) return Max[s];

    int mid = l + r >> 1;
    return max(get(u, v, s << 1, l, mid), get(u, v, s << 1 | 1, mid + 1, r)) + lz[s];
}

void solve(){
    cin >> n >> m;
    for (int i = 1; i <= n; ++ i) cin >> a[i] >> s[i] >> p[i], a[i] += a[i - 1];
    for (int i = 1; i <= m; ++ i) cin >> b[i] >> t[i] >> q[i], b[i] += b[i - 1];

    for (int i = 1; i <= n; ++ i) s[i] = upper_bound(b, b + m + 1, s[i] - a[i]) - b - 1;
    for (int i = 1; i <= m; ++ i){
        t[i] = upper_bound(a, a + n + 1, t[i] - b[i]) - a;
        event[t[i]].pb(i);
    }

    for (int i = 1; i <= 4 * m + 4; ++ i) Max[i] = -inf, lz[i] = 0;
    update(0, 0, 0, 0);

    for (int i = 1; i <= n + 1; ++ i){
        for (int j : event[i]){
            ll f = get(0, j - 1);
            update(j, j, f, 0);
        }
        if (i > n) update(m, m, get(0, m - 1), 0);
        ll f = get(0, s[i]);
        update(s[i] + 1, s[i] + 1, f, 0);
        update(0, s[i], p[i], 1);
        for (int j : event[i]) update(j, m, q[j], 1);
    }
    cout << get(m, m);
}

int main(){
    if (fopen("pqh.inp", "r")){
        freopen("pqh.inp", "r", stdin);
        freopen("pqh.out", "w", stdout);
    }
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    int t = 1; // cin >> t;
    while (t --) solve();
    return 0;
}

Compilation message (stderr)

dishes.cpp:18:11: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   18 | void maxl(auto &a, auto b) {a = max(a, b);}
      |           ^~~~
dishes.cpp:18:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   18 | void maxl(auto &a, auto b) {a = max(a, b);}
      |                    ^~~~
dishes.cpp:19:11: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   19 | void minl(auto &a, auto b) {a = min(a, b);}
      |           ^~~~
dishes.cpp:19:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   19 | void minl(auto &a, auto b) {a = min(a, b);}
      |                    ^~~~
dishes.cpp: In function 'void update(int, int, ll, bool, int, int, int)':
dishes.cpp:36:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   36 |     int mid = l + r >> 1; if (!op) val -= lz[s];
      |               ~~^~~
dishes.cpp: In function 'll get(int, int, int, int, int)':
dishes.cpp:46:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   46 |     int mid = l + r >> 1;
      |               ~~^~~
dishes.cpp: In function 'int main()':
dishes.cpp:80:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   80 |         freopen("pqh.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
dishes.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("pqh.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 3 / 3
• Subtask 3: 7 / 7
• Subtask 4: 39 / 39
• Subtask 5: 11 / 11
• Subtask 6: 9 / 9
• Subtask 7: 17 / 17
• Subtask 8: 9 / 9