Submission #1161462

#	Time	Username	Problem	Language	Result	Execution time	Memory
1161462		JahonaliX	Race (IOI11_race)	C++20	Compilation error	0 ms	0 KiB

race

#include <bits/stdc++.h>

using namespace std;

int best_path(int n, int k, int h[][2], int l[]) {
    int z = n;
    vector<vector<pair<int, int>>> a(n);
    for (int i = 0; i + 1 < n; ++i) a[h[i][0]].emplace_back(h[i][1], l[i]), a[h[i][1]].emplace_back(h[i][0], l[i]);
    auto dfs = [&] (auto dfs, int i, int p, int w) -> vector<int> {
        vector<int> dp(k + 1, -1);
        dp[0] = 0;
        for (auto [j, wtf] : a[i]) {
            if (p != j) {
                auto x = dfs(dfs, j, i, wtf);
                for (int y = 0; y <= k; ++y) if (~dp[k - y] && ~x[y]) z = min(z, dp[k - y] + x[y]);
                for (int y = 0; y <= k; ++y) {
                    if (~x[y]) {
                        if (~dp[y]) dp[y] = min(dp[y], x[y]);
                        else dp[y] = x[y];
                    }
                }
            }
        }
        for (int y = k - w; y >= 0; --y) dp[y + wtf] = dp[y]; 
        if (~dp[k]) z = min(z, dp[k]);
        return dp;
    };
    dfs(dfs, 0, 0, 0);
    return z;
}

Compilation message (stderr)

race.cpp: In lambda function:
race.cpp:24:49: error: 'wtf' was not declared in this scope
   24 |         for (int y = k - w; y >= 0; --y) dp[y + wtf] = dp[y];
      |                                                 ^~~