Submission #435834

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
435834	2021-06-23T19:14:42 Z	2qbingxuan	Worst Reporter 4 (JOI21_worst_reporter4)	C++14	Compilation error	0 ms	0 KB

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];
int cyc[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;
    vector<int> A(n);
    vector<int> indeg(n);
    for (int i = 0; i < n; i++) {
        cin >> A[i] >> H[i] >> C[i];
        tot += C[i];
        --A[i];
        ++indeg[A[i]];
        g[A[i]].push_back(i);
    }
    for (int i = 0; i < n; i++)
    for (int i = 0; i < n; i++) cyc[i] = -1;
    queue<int> que;
    for (int i = 0; i < n; i++) if (indeg[i] == 0) que.push(i), cyc[i] = 0;
    while (!que.empty()) {
        int i = que.front(); que.pop();
        int j = A[i];
        if (--indeg[j] == 0)
            que.push(j), cyc[j] = 0;
    }
    vector<vecoor<int>> roots;
    roots.reserve(n);
    for (int i = 0, tot = 0; i < n; i++) if (cyc[i] == -1) {
        roots.emplace_back();
        roots.back().emplace_back(i);
        cyc[i] = ++tot;
        for (int x = A[i]; x != i; x = A[x]) {
            roots.back().emplace_back(x);
            cyc[x] = cyc[i];
        }
    }
    ll ans = 0;
    for (auto R: roots) {
        map<int,ll> best;
        for (int x: R) {
            ll dp = C[x];
            for (int y: g[x]) {
                if (cyc[y]) continue;
                dfs(y);
                for (auto [h, val]: sub[y]) if (h >= H[x]) dp += val;
                join(y, R[0]);
            }
            best[H[x]] += dp;
        }
        ll mx = 0;
        for (auto [h, val]: sub[R[0]]) mx += val;
        for (auto [h, val]: best) mx = max(mx, val);
        ans += mx;
    }
    cout << tot - ans << '\n';
}

Compilation message

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:79:12: error: 'vecoor' was not declared in this scope
   79 |     vector<vecoor<int>> roots;
      |            ^~~~~~
worst_reporter2.cpp:79:22: error: template argument 1 is invalid
   79 |     vector<vecoor<int>> roots;
      |                      ^~
worst_reporter2.cpp:79:22: error: template argument 2 is invalid
worst_reporter2.cpp:80:11: error: request for member 'reserve' in 'roots', which is of non-class type 'int'
   80 |     roots.reserve(n);
      |           ^~~~~~~
worst_reporter2.cpp:82:15: error: request for member 'emplace_back' in 'roots', which is of non-class type 'int'
   82 |         roots.emplace_back();
      |               ^~~~~~~~~~~~
worst_reporter2.cpp:83:15: error: request for member 'back' in 'roots', which is of non-class type 'int'
   83 |         roots.back().emplace_back(i);
      |               ^~~~
worst_reporter2.cpp:86:19: error: request for member 'back' in 'roots', which is of non-class type 'int'
   86 |             roots.back().emplace_back(x);
      |                   ^~~~
worst_reporter2.cpp:91:18: error: 'begin' was not declared in this scope; did you mean 'std::begin'?
   91 |     for (auto R: roots) {
      |                  ^~~~~
      |                  std::begin
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from worst_reporter2.cpp:1:
/usr/include/c++/10/valarray:1224:5: note: 'std::begin' declared here
 1224 |     begin(const valarray<_Tp>& __va)
      |     ^~~~~
worst_reporter2.cpp:91:18: error: 'end' was not declared in this scope; did you mean 'std::end'?
   91 |     for (auto R: roots) {
      |                  ^~~~~
      |                  std::end
In file included from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:95,
                 from worst_reporter2.cpp:1:
/usr/include/c++/10/valarray:1244:5: note: 'std::end' declared here
 1244 |     end(const valarray<_Tp>& __va)
      |     ^~~
worst_reporter2.cpp:98:27: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   98 |                 for (auto [h, val]: sub[y]) if (h >= H[x]) dp += val;
      |                           ^
worst_reporter2.cpp:104:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  104 |         for (auto [h, val]: sub[R[0]]) mx += val;
      |                   ^
worst_reporter2.cpp:105:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  105 |         for (auto [h, val]: best) mx = max(mx, val);
      |                   ^