Submission #867445

#	Time	Username	Problem	Language	Result	Execution time	Memory
867445		sleepntsheep	Biochips (IZhO12_biochips)	C++17	Compilation error	0 ms	0 KiB

biochips

#include <iostream>
#include <vector>
#include <algorithm>
#include <deque>
#include <set>
#include <utility>
#include <array>

using namespace std;
#define ALL(x) x.begin(), x.end()
#define ShinLena cin.tie(nullptr)->sync_with_stdio(false);
#define N 200050
using ll = long long;

int n, m, a[N], timer, dp[2][N];
vector<int> g[N];
vector<tuple<int, int, int>> v;

void dfs(int u)
{
    int in = timer++;
    for (auto v : g[u]) dfs(v);
    int out = timer++;
    v.emplace_back(out, in, a[u]);
}

void schedule()
{
    for (int j = 1; j <= m; ++j)
    {
        for (auto i = 1; i <= n; ++i)
        {
            int l = 0, r = i-1;
            auto it = partition_point(ALL(v), [&](auto it){ return get<0>(*it) < get<1>(v[i]); });
            dp[j&1][i] = max(dp[j&1][i-1], dp[!(j&1)][it-v.begin()] + get<2>(v[i]));
        }
    }
}

int main()
{
    ShinLena;
    cin >> n >> m;
    for (int p, i = 1; i <= n; ++i) cin >> p >> a[i], g[p].push_back(i);
    v={{-1e9,0,0}};dfs(0);
    sort(ALL(v));
    schedule();
    cout << dp[m&1][n];
    return 0;
}

Compilation message (stderr)

biochips.cpp: In function 'void schedule()':
biochips.cpp:33:17: warning: unused variable 'l' [-Wunused-variable]
   33 |             int l = 0, r = i-1;
      |                 ^
biochips.cpp:33:24: warning: unused variable 'r' [-Wunused-variable]
   33 |             int l = 0, r = i-1;
      |                        ^
biochips.cpp: In instantiation of 'schedule()::<lambda(auto:1)> [with auto:1 = std::tuple<int, int, int>]':
/usr/include/c++/10/bits/stl_algo.h:573:14:   required from '_FIter std::partition_point(_FIter, _FIter, _Predicate) [with _FIter = __gnu_cxx::__normal_iterator<std::tuple<int, int, int>*, std::vector<std::tuple<int, int, int> > >; _Predicate = schedule()::<lambda(auto:1)>]'
biochips.cpp:34:97:   required from here
biochips.cpp:34:75: error: no match for 'operator*' (operand type is 'std::tuple<int, int, int>')
   34 |             auto it = partition_point(ALL(v), [&](auto it){ return get<0>(*it) < get<1>(v[i]); });
      |                                                                           ^~~