Submission #42796

#	Time	Username	Problem	Language	Result	Execution time	Memory
42796		funcsr	Aliens (IOI16_aliens)	C++14	Compilation error	0 ms	0 KiB

aliens

#include "aliens.h"
#include <iostream>
#include <vector>
#include <string>
#include <cassert>
using namespace std;
typedef pair<int, int> P;
#define rep(i, n) for (int i=0; i<(n); i++)
#define all(x) x.begin(), x.end()
#define pb push_back
#define INF 1145141919
#define _1 first
#define _2 second

long long take_photos(int N, int M, int K, std::vector<int> R, std::vector<int> C) {
  vector<P> ps;
  rep(i, N) {
    int l = R[i], r = C[i];
    if (l > r) swap(l, r);
    ps.pb(P(l, -r));
  }
  sort(all(ps));
  int r = -1;
  vector<P> nps;
  for (P p : ps) {
    if (-p._2 > r) {
      nps.pb(P(p._1, -p._2));
      r = -p._2;
    }
  }
  swap(ps, nps);
  int last_r = -1;
  long long s = 0;
  assert(K==N);
  for (P p : ps) {
    int l = p._1, r = p._2;
    //cout<<"["<<l<<","<<r<<"]\n";
    s += 1LL*(r-l+1)*(r-l+1);
    if (l <= last_r) s -= 1LL*(last_r-l+1)*(last_r-l+1);
    last_r = r;
  }
  return s;
}

Compilation message (stderr)

aliens.cpp: In function 'long long int take_photos(int, int, int, std::vector<int>, std::vector<int>)':
aliens.cpp:22:15: error: 'sort' was not declared in this scope
   sort(all(ps));
               ^