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Submission #243631

# Submission time Handle Problem Language Result Execution time Memory
243631 2020-07-01T12:52:16 Z uacoder123 Strange Device (APIO19_strange_device) C++14
65 / 100
 613 ms 53432 KB 
#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
 
typedef long long int lli;
typedef pair <lli,lli> ii;
typedef pair <lli,ii> iii;
typedef vector <lli> vi;

int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  lli test=1;
  for(;test>0;--test)
  {
    lli n,a,b,g,p,f,s,cl,cr,ans=0,ch=1;
    cin>>n>>a>>b;
    g=__gcd(a,b+1);
    g=a/g;
    if(1.0*g*b>1000000000000000000)
      p=1000000000500000000;
    else
      p=g*b;
    vector<ii> v;
    for(lli i=0;i<n;++i)
    {
      cin>>f>>s;
      if(f-s+1>=p)
      {
        ch=0;
      }
      f%=p;
      s%=p;
      if(f<=s)
        v.pb(mp(f,s));
      else
      {
        v.pb(mp(0,s));
        v.pb(mp(f,p-1));
      }
    }
    if(ch==0)
    {
      cout<<p<<endl;
      exit(0);
    }
    sort(all(v));
    v.pb(mp(p,p));
    cl=0;
    cr=-1;
    ans=0;
    for(lli i=0;i<v.size();++i)
    {
      if(v[i].F<=cr)
      {
        if(v[i].S>=cr)
        cr=v[i].S;
      }
      else
      {
        ans+=cr-cl+1;
        cl=v[i].F;
        cr=v[i].S;
      }
    }
    cout<<ans<<endl;
  }
  return(0);
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:61:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(lli i=0;i<v.size();++i)
                 ~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 9 ms 768 KB Output is correct
3 Correct 10 ms 1152 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 10 ms 1152 KB Output is correct
17 Correct 60 ms 5740 KB Output is correct
18 Correct 5 ms 384 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Incorrect 5 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 383 ms 41500 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 520 ms 16852 KB Output is correct
3 Correct 502 ms 36032 KB Output is correct
4 Correct 516 ms 36456 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 520 ms 16852 KB Output is correct
3 Correct 502 ms 36032 KB Output is correct
4 Correct 516 ms 36456 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 505 ms 36160 KB Output is correct
7 Correct 536 ms 36616 KB Output is correct
8 Correct 512 ms 36564 KB Output is correct
9 Correct 563 ms 36564 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 520 ms 16852 KB Output is correct
3 Correct 502 ms 36032 KB Output is correct
4 Correct 516 ms 36456 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 55 ms 5748 KB Output is correct
7 Correct 57 ms 5736 KB Output is correct
8 Correct 54 ms 5736 KB Output is correct
9 Correct 57 ms 5740 KB Output is correct
10 Correct 53 ms 5740 KB Output is correct
11 Correct 57 ms 5868 KB Output is correct
12 Correct 56 ms 5736 KB Output is correct
13 Correct 60 ms 5736 KB Output is correct
14 Correct 57 ms 5740 KB Output is correct
15 Correct 59 ms 5740 KB Output is correct
16 Correct 59 ms 5740 KB Output is correct
17 Correct 61 ms 5740 KB Output is correct
18 Correct 539 ms 36756 KB Output is correct
19 Correct 521 ms 36692 KB Output is correct
20 Correct 571 ms 36688 KB Output is correct
21 Correct 61 ms 5736 KB Output is correct
22 Correct 52 ms 5740 KB Output is correct
23 Correct 169 ms 18672 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 60 ms 2544 KB Output is correct
3 Correct 60 ms 5740 KB Output is correct
4 Correct 613 ms 53372 KB Output is correct
5 Correct 58 ms 5736 KB Output is correct
6 Correct 60 ms 5740 KB Output is correct
7 Correct 59 ms 5736 KB Output is correct
8 Correct 60 ms 5740 KB Output is correct
9 Correct 62 ms 5744 KB Output is correct
10 Correct 60 ms 5740 KB Output is correct
11 Correct 62 ms 5740 KB Output is correct
12 Correct 52 ms 5740 KB Output is correct
13 Correct 59 ms 5740 KB Output is correct
14 Correct 605 ms 53432 KB Output is correct
15 Correct 60 ms 5756 KB Output is correct
16 Correct 534 ms 36544 KB Output is correct
17 Correct 538 ms 36564 KB Output is correct
18 Correct 5 ms 384 KB Output is correct

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 9 ms 768 KB Output is correct
3 Correct 10 ms 1152 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 10 ms 1152 KB Output is correct
17 Correct 60 ms 5740 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Incorrect 5 ms 384 KB Output isn't correct
21 Halted 0 ms 0 KB -