Submission #1197265

#	Time	Username	Problem	Language	Result	Execution time	Memory
1197265		andrejikus	Detecting Molecules (IOI16_molecules)	C++20	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
//#include "molecules.h"
using namespace std;
typedef long long ll;
void DBG() { cerr << "]" << endl; }
template<class H, class... T> void DBG(H h, T... t) { cerr << to_string(h); if(sizeof...(t)) cerr << ", "; DBG(t...); }
#define dbg(...) cerr << "[" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)

const int N = 1e4 + 3;
int dp[N];

vector<int> find_subset(int l, int u, vector<int> w) {
    for (int i = 0; i < N; i++) dp[i] = -1;
    vector<int> res;

    dp[0] = 0;
    for (int i = 0; i < w.size(); i++) {
        for (int j = 0; j <= u; j++) {
            if (j-w[i] < 0) continue;
            if (dp[j-w[i]] == -1 || dp[j-w[i]] == i+1) continue;
            dp[j] = i+1;
        }
    }

    for (int t = l; t <= u; t++) {
        if (dp[t] == -1) continue;
        int j = t;

        while (j != 0) {
            res.push_back(dp[j]-1);
            j -= w[dp[j]-1];
        }
        if (j == 0) break;
    }
    sort(res.begin(), res.end());

    return res;
}

int main() {
    int n, l, u;
    assert(3 == scanf("%d %d %d", &n, &l, &u));
    std::vector<int> w(n);
    for (int i = 0; i < n; i++)
        assert(1 == scanf("%d", &w[i]));
    std::vector<int> result = find_subset(l, u, w);


    printf("%d\n", (int)result.size());
    for (int i = 0; i < (int)result.size(); i++)
        printf("%d%c", result[i], " \n"[i == (int)result.size() - 1]);
}

/*
4 15 17
6 8 8 7

4 15 16
5 5 6 6

4 10 20
15 17 16 18
*/

Compilation message (stderr)

molecules.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
molecules_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
/usr/bin/ld: /tmp/ccxg9R4e.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccd5GJAM.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status