Submission #435696

#	Time	Username	Problem	Language	Result	Execution time	Memory
435696		2qbingxuan	Worst Reporter 4 (JOI21_worst_reporter4)	C++14	79 / 100	484 ms	101324 KiB

worst_reporter2

#include <bits/stdc++.h>
#ifdef local
#define safe std::cerr<<__PRETTY_FUNCTION__<<" line "<<__LINE__<<" safe\n"
#define debug(a...) qqbx(#a, a)
#define pary(a...) danb(#a, a)
template <typename ...T> void qqbx(const char *s, T ...a) {
    int cnt = sizeof...(T);
    ((std::cerr << "\033[1;32m(" << s << ") = (") , ... , (std::cerr << a << (--cnt ? ", " : ")\033[0m\n")));
}
template <typename T> void danb(const char *s, T L, T R) {
    std::cerr << "\033[1;32m[ " << s << " ] = [ ";
    for (auto it = L; it != R; ++it)
        std::cerr << *it << ' ';
    std::cerr << "]\033[0m\n";
}
#else
#define safe ((void)0)
#define debug(...) ((void)0)
#define pary(...) ((void)0)
#endif // local
#define all(v) begin(v),end(v)

using namespace std;
using ll = int64_t;
const int maxn = 200025, maxm = 10000;

int H[maxn], C[maxn];
vector<int> g[maxn];
map<int,ll,greater<>> sub[maxn];
void join(int a, int b) {
    if (sub[a].size() > sub[b].size())
        swap(sub[a], sub[b]);
    for (auto [h, val]: sub[a])
        sub[b][h] += val;
}
void dfs(int i) {
    for (int j: g[i]) {
        dfs(j);
        join(j, i);
    }
    sub[i][H[i]] += C[i];
    auto it = sub[i].upper_bound(H[i]);
    ll v = C[i];
    while (it != sub[i].end()) {
        if (it->second < v) {
            v -= it->second;
            sub[i].erase(it++);
        } else {
            it->second -= v;
            break;
        }
    }
}
signed main() {
    ios_base::sync_with_stdio(0), cin.tie(0);
    int n;
    cin >> n;
    ll tot = 0;
    for (int i = 0; i < n; i++) {
        int A;
        cin >> A >> H[i] >> C[i];
        tot += C[i];
        --A;
        if (i) g[A].push_back(i);
    }
    dfs(0);
    ll best = 0;
    for (auto [h, val]: sub[0]) {
        best += val;
    }
    cout << tot - best << '\n';
}

Compilation message (stderr)

worst_reporter2.cpp: In function 'void join(int, int)':
worst_reporter2.cpp:34:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   34 |     for (auto [h, val]: sub[a])
      |               ^
worst_reporter2.cpp: In function 'int main()':
worst_reporter2.cpp:69:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   69 |     for (auto [h, val]: sub[0]) {
      |               ^

• Subtask 1: 14 / 14
• Subtask 2: 65 / 65
• Subtask 3: 0 / 21