Submission #68132

#	Time	Username	Problem	Language	Result	Execution time	Memory
68132		Just_Solve_The_Problem	Toy Train (IOI17_train)	C++11	Compilation error	0 ms	0 KiB

train

#include <bits/stdc++.h>
#include "train.h"
#include "grader.cpp"

#define sz(s) (int)s.size()
#define pb push_back
#define all(s) s.begin(), s.end()

using namespace std;

const int N = (int)5e3 + 7;

int has[N];

vector < int > gr[N], rev[N];
vector < int > a, r;

vector < int > who_wins(vector < int > A, vector < int > R, vector < int > u, vector < int > v) {
  a = A; r = R;
  int n = sz(a);
  int m = sz(u);
  for (int i = 0; i < m; i++) {
    gr[u[i]].pb(v[i]);
    rev[v[i]].pb(u[i]);
  }
  vector < int > ans(n, 1);
  while (1) {
    vector < int > fa(n);
    queue < int > q;
    for (int i = 0; i < n; i++) {
      if (ans[i] && r[i]) {
        q.push(i);
      } else if (a[i]) {
        fa[i] = 1;
      } else {
        fa[i] = sz(gr[i]);
      }
    }
    while (sz(q)) {
      int v = q.front();
      q.pop();
      for (int to : rev[v]) {
        if (fa[to] == 1) q.push(to);
        fa[to]--;
      }
    }
    vector < int > fb(n);
    for (int i = 0; i < n; i++) {
      if (fa[i] > 0) {
        q.push(i);
      } else if (a[i]) {
        fb[i] = sz(gr[i]);
      } else {
        fb[i] = 1;
      }
    }
    while (sz(q)) {
      int v = q.front();
      q.pop();
      for (int to : rev[v]) {
        if (fb[to] == 1) q.push(to);
        fb[to]--;
      }
    }
    vector < int > prv(n);
    for (int i = 0; i < n; i++) prv[i] = (fb[i] > 0);
    if (prv == ans) return ans;
    else ans = prv;
  }
}

Compilation message (stderr)

/tmp/cc2vrpw9.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/cc0zWzbf.o:train.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status