Submission #311997

#	Time	Username	Problem	Language	Result	Execution time	Memory
311997		anakib1	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

//나는 가상 소녀들에게 큰 호감이 있습니다.

#include <iostream>
#include <cmath>
#include <algorithm>
#include <stdio.h>
#include <cstring>
#include <string>
#include <cstdlib>
#include <vector>
#include <bitset>
#include <map>
#include <chrono>
#include <functional>
#include <unordered_set>
#include <unordered_map>
#include <numeric>
#include <queue>
#include <ctime>
#include <stack>
#include <set>
#include <list>
#include <deque>
#include <iomanip>
#include <sstream>
#include <fstream>
#include <stdarg.h>
#include <utility>

using namespace std;

#define pb push_back
#define mp make_pair
#define ll long long
#define ull unisgned long long
#define ld long double
#define all(a) a.begin(), a.end()
#define SORT(a) sort(all(a))
#define pii pair<int, int>
#define tii triple<int, int, int>
#define e 1e-7
#define PI acos(-1)
#define sz(a) (int)(a.size())
#define inf 1e17
#define vi vector<int>
#define F first
#define S second
#define rng(x) for(int _ = 0; _ < (x); _++)
#define rngi(i, x) for(int i = 0; i < (x); i++)
#define rngsi(s, i, x) for(int i = (s); i <(x); i++)
#define problem "a"

template<typename A, typename B, typename C>
struct triple {
    A X;
    B Y;
    C Z;
    triple(A a = 0, B b = 0, C c = 0) :X(a), Y(b), Z(c) {}
};
template<typename A, typename B, typename C>
triple<A, B, C> make_triple(A a = 0, B b = 0, C c = 0) {
    return triple<A, B, C>(a, b, c);
}
template<typename A, typename B, typename C>
bool operator<(const triple<A, B, C>& a, const triple<A, B, C>& b) {
    if (a.X != b.X)
        return a.X < b.X;
    if (a.Y != b.Y)
        return a.Y < b.Y;
    return a.Z < b.Z;
}
template<typename T, typename SS>
ostream& operator<<(ostream& ofs, const pair<T, SS>& p) {
    ofs << "( " << p.F << " , " << p.S << " )";
    return ofs;
}
template<typename T>
void print(T a) {
    for (auto i : a)
        cout << i << ' ';
    cout << '\n';
}
template<typename T>
T max(T a, T b, T c) {
    return max(a, max(b, c));
}
template<typename T>
T min(T a, T b, T c) {
    return min(a, min(b, c));
}
template<typename T, typename D>
D min(T a) {
    return *min_element(all(a));
}
template<typename T, typename D>
D max(T a) {
    return *max_element(all(a));
}
struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    int n = sz(w);
    vector<bitset<10001> > buf(n + 1), p(n + 1);
    buf[0][0] = 1;
    rngi(i, n) {
        buf[i + 1] = buf[i];
        for (int j = 0; j + w[i] <= u; j++)
            if (buf[i][j]){
                buf[i + 1][j + w[i]] = 1;
                p[i + 1][j + w[i]] = 1;
            }
        
    }
    for (int i = l; i <= u; i++) if (buf[n][i]) {
        vi ans;
        int x = i, j = n;
        while (x) {
            if (p[j][x]) {
                ans.push_back(j - 1);
                x -= w[j - 1];
            }
            j--;
        }
        reverse(all(ans));
        return ans;
    }
    return vi();
    
}

int main() {
    int n, l, u;
    scanf("%d %d %d", &n, &l, &u);
    std::vector<int> w(n);
    for (int i = 0; i < n; i++)
        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]);
}

Compilation message (stderr)

molecules.cpp: In function 'int main()':
molecules.cpp:145:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  145 |     scanf("%d %d %d", &n, &l, &u);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
molecules.cpp:148:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  148 |         scanf("%d", &w[i]);
      |         ~~~~~^~~~~~~~~~~~~
/tmp/ccMJgKoz.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/cc303mIG.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status