Submission #530697

#	Time	Username	Problem	Language	Result	Execution time	Memory
530697		Cyanmond	Roller Coaster Railroad (IOI16_railroad)	C++17	Compilation error	0 ms	0 KiB

railroad

#include <bits/stdc++.h>

template <typename T> using Vec = std::vector<T>;

std::vector<int> find_subset(int L, int R, std::vector<int> W) {
    const int N = (int)W.size();
    Vec<Vec<int>> dp(N + 1, std::vector<int>(R + 1, -1));
    dp[0][0] = 0;
    for (int i = 0; i < N; ++i) {
        for (int j = 0; j <= R; ++j) {
            if (dp[i][j] == -1) continue;
            dp[i + 1][j] = dp[i][j];
            if (j + W[i] <= R) dp[i + 1][j + W[i]] = i;
        }
    }

    for (int answer_w = L; answer_w <= R; ++answer_w) {
        if (dp[N][answer_w] == -1) continue;

        Vec<int> answer;
        int now = answer_w, now_id = N;
        while (now != 0) {
            const int new_id = dp[now_id][now];
            answer.push_back(new_id);
            now -= W[new_id];
            now_id = new_id;
        }

        return answer;
    }

    return {};
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cclDNVDw.o: in function `main':
grader.cpp:(.text.startup+0xf4): undefined reference to `plan_roller_coaster(std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status