Submission #931555

#	Time	Username	Problem	Language	Result	Execution time	Memory
931555		nguyentunglam	Simurgh (IOI17_simurgh)	C++17	Compilation error	0 ms	0 KiB

simurgh

#include<bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define endl "\n"
#define int long long
using namespace std;

const int N = 510 + 01;

int a[N][N];

//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

mt19937 rng(1417415151);

long long rnd(long long l, long long r) {
    return l + rng() % (r - l + 1);
}

int u[510], v[510];

int32_t main() {
  for(int test = 1; test <= 100000; test ++) {
    cerr << "Test Case #" << test << ":.....\n";
    ofstream cout ("task.inp");

    int n = rnd(4, 5), m = rnd(1, 4);

    m = min(m, n * (n - 1) / 2 - n + 1);

    vector<pair<int, int> > e;

    map<pair<int, int>, int> dd;

    for(int i = 1; i < n; i++) {
      int u = rnd(0, i - 1), v = i;
      dd[{u, v}] = dd[{v, u}] = i;
      e.emplace_back(u, v);
    }

    while (m--) {
      int u = rnd(0, n - 1), v = rnd(0, n - 1);
      while (u == v || dd[{u, v}]) u = rnd(0, n - 1), v = rnd(0, n - 1);
      e.emplace_back(u, v);
      dd[{u, v}] = dd[{v, u}] = -1;
    }

    shuffle(e.begin(), e.end(), rng);

    cout << n << " " << e.size() << endl;

    for(auto &[x, y] : e) cout << x << " " << y << endl;

    for(int i = 0; i < e.size(); i++) {
      int u, v; tie(u, v) = e[i];
      if (dd[{u, v}] > 0) cout << i << " ";
    }

    cout.close();

    if (system("grader.exe") == 3) exit(0);
//    if (system("trau.exe") == 3) exit(0);
//    if (system ("fc task.out task.ans")) exit(0);
  }
}

Compilation message (stderr)

simurgh.cpp: In function 'int32_t main()':
simurgh.cpp:53:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |     for(int i = 0; i < e.size(); i++) {
      |                    ~~^~~~~~~~~~
/usr/bin/ld: /tmp/ccYOWqh0.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccGFHUV2.o:simurgh.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccYOWqh0.o: in function `main':
grader.cpp:(.text.startup+0x2ef): undefined reference to `find_roads(int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status