Submission #362014

#	Time	Username	Problem	Language	Result	Execution time	Memory
362014		Siddhant	Detecting Molecules (IOI16_molecules)	C++98	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef pair<int, int> pi;

#define F first
#define S second
#define PB push_back
#define MP make_pair
#define pop_front(v) v.erase(v.begin())
#define REP(i, a, b) for (int i=a; i<=b; i++)
#define REPn(i, a, b) for (int i=a; i>=b; i--)
#define FOR(i, n) REP(i, 0, n-1)
#define FORn(j, n) REPn(j, n-1, 0)
#define all(v) v.begin(), v.end()
#define allR(v) v.rbegin(), v.rend()

void produceCases() {
    int n=rand()%100+1;
    int a1=rand()%1000+1, a2=rand()%1000+1;
    int l = min(a1, a2), u=max(a2, a1);
    cout<<n<<" "<<l<<" "<<u<<endl;
    int kk = rand()%1000;
    FOR(i, n) {
        cout<<kk+rand()%2<<" ";
    }
    cout<<endl;
}   

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    freopen("input.txt", "w", stdout);
    srand(time(NULL));

    int totalCases=100;
    cout<<totalCases<<endl;
    REP(i, 1, totalCases) {
        produceCases();
    }
}

Compilation message (stderr)

molecules.cpp: In function 'int main()':
molecules.cpp:38:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   38 |     freopen("input.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/ccX8FH6M.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccpmyIvL.o:molecules.cpp:(.text.startup+0x0): first defined here
/tmp/ccX8FH6M.o: In function `main':
grader.cpp:(.text.startup+0x139): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status