Submission #1033228

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033228		RecursiveCo	Jobs (BOI24_jobs)	C++17	29 / 100	88 ms	41724 KiB

Main

// CF template, version 3.0

#include <bits/stdc++.h>

using namespace std;

#define improvePerformance ios_base::sync_with_stdio(false); cin.tie(0)
#define getTest int t; cin >> t
#define eachTest for (int _var=0;_var<t;_var++)
#define get(name) int (name); cin >> (name)
#define out(o) cout << (o)
#define getList(cnt, name) vector<int> (name); for (int _=0;_<(cnt);_++) { get(a); (name).push_back(a); }
#define sortl(name) sort((name).begin(), (name).end())
#define rev(name) reverse((name).begin(), (name).end())
#define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
#define decision(b) if (b){out("YES");}else{out("NO");}

#define int long long int

template <typename T, typename I>
struct segtree {
    int n;
    vector<T> tree;
    vector<I> initial;
    T id;

    segtree(int i_n, vector<I> i_initial, T i_id): n(i_n), initial(i_initial), id(i_id) {
        tree.resize(4 * n);
    }

    T conquer(T left, T right) {
        // write your conquer function
    }

    T value(I inp) {
        // write your value function
    }

    void build(int v, int l, int r) {
        if (l == r) tree[v] = value(initial[l]);
        else {
            int middle = (l + r) / 2;
            build(2 * v, l, middle);
            build(2 * v + 1, middle + 1, r);
            tree[v] = conquer(tree[2 * v], tree[2 * v + 1]);
        }
    }

    void upd(int v, int l, int r, int i, I x) {
        if (l == r) tree[v] = value(x);
        else {
            int middle = (l + r) / 2;
            if (middle >= i) upd(2 * v, l, middle, i, x);
            else upd(2 * v + 1, middle + 1, r, i, x);
            tree[v] = conquer(tree[2 * v], tree[2 * v + 1]);
        }
    }

    T query(int v, int l, int r, int ql, int qr) {
        if (ql <= l && r <= qr) return tree[v];
        else if (r < ql || qr < l) return id;
        int middle = (l + r) / 2;
        T left = query(2 * v, l, middle, ql, qr);
        T right = query(2 * v + 1, middle + 1, r, ql, qr);
        return conquer(left, right);
    }
};

// vector<int>

signed main() {
    improvePerformance;
    //getTest;
    
    //eachTest {
        // only solves the path case.
        get(n);
        get(s);
        int ors = s;
        vector<vector<int>> pathst;
        vector<int> cur;
        forto(n, i) {
            get(x);
            get(p);
            if (p == 0 && i) {
                pathst.push_back(cur);
                cur.clear();
            }
            cur.push_back(x);
        }
        pathst.push_back(cur);
        vector<vector<int>> pathsnx;
        for (vector<int> path: pathst) {
            bool sign = false; // negative
            bool activated = false;
            int count = 0;
            vector<int> newpath;
            for (int x: path) {
                if (activated) {
                    if (x < 0 && sign) {
                        sign = false;
                        newpath.push_back(count);
                        count = 0;
                    } else if (x > 0 && !sign) {
                        sign = true;
                        newpath.push_back(count);
                        count = 0;
                    }
                    count += x;
                }
                if (x < 0 && !activated) {
                    activated = true;
                    count += x;
                } else if (!activated) {
                    s += x;
                }
            }
            if (sign) newpath.push_back(count);
            if (!newpath.empty()) pathsnx.push_back(newpath);
        }
        vector<vector<pair<int, int>>> paths;
        for (vector<int> path: pathsnx) {
            int minbal = 0;
            int bal = 0;
            vector<pair<int, int>> newpath;
            for (int x: path) {
                bal += x;
                minbal = min(minbal, bal);
                if (bal > 0) {
                    newpath.push_back({minbal, bal});
                    minbal = 0;
                    bal = 0;
                }
            }
            rev(newpath);
            paths.push_back(newpath);
        }
        priority_queue<array<int, 3>> pq;
        int sz = paths.size();
        forto(sz, i) if (!paths[i].empty()) pq.push({paths[i].back().first, paths[i].back().second, i});
        while (!pq.empty()) {
            auto top = pq.top();
            int needed = -top[0];
            if (needed > s) break;
            s += top[1];
            int ind = top[2];
            pq.pop();
            paths[ind].pop_back();
            if (!paths[ind].empty()) pq.push({paths[ind].back().first, paths[ind].back().second, ind});
        }
        out(s - ors);
    //}
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:10:23: warning: unnecessary parentheses in declaration of 'n' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
Main.cpp:77:9: note: in expansion of macro 'get'
   77 |         get(n);
      |         ^~~
Main.cpp:10:23: warning: unnecessary parentheses in declaration of 's' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
Main.cpp:78:9: note: in expansion of macro 'get'
   78 |         get(s);
      |         ^~~
Main.cpp:15:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
Main.cpp:82:9: note: in expansion of macro 'forto'
   82 |         forto(n, i) {
      |         ^~~~~
Main.cpp:10:23: warning: unnecessary parentheses in declaration of 'x' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
Main.cpp:83:13: note: in expansion of macro 'get'
   83 |             get(x);
      |             ^~~
Main.cpp:10:23: warning: unnecessary parentheses in declaration of 'p' [-Wparentheses]
   10 | #define get(name) int (name); cin >> (name)
      |                       ^
Main.cpp:84:13: note: in expansion of macro 'get'
   84 |             get(p);
      |             ^~~
Main.cpp:15:35: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
   15 | #define forto(name, var) for (int (var) = 0; (var) < (name); (var)++)
      |                                   ^
Main.cpp:140:9: note: in expansion of macro 'forto'
  140 |         forto(sz, i) if (!paths[i].empty()) pq.push({paths[i].back().first, paths[i].back().second, i});
      |         ^~~~~

• Subtask 1: 0 / 11
• Subtask 2: 14 / 14
• Subtask 3: 15 / 15
• Subtask 4: 0 / 29
• Subtask 5: 0 / 31