Submission #379172

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
379172	2021-03-17 12:30:09	Bill_00	Strange Device (APIO19_strange_device)	C++14	100 / 100	1755 ms	69320 KiB

strange_device

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#include <bits/stdc++.h>
typedef long long ll;
#define N 20005
#define ff first
#define ss second
#define pb push_back
using namespace std;
ll gcd(ll a,ll b){
  while(a!=0 && b!=0){
    if(a>b){
      a=a%b;
    }
    else b=b%a;
  }
  return max(a,b);
}
vector<pair<pair<ll,ll>,pair<ll,ll> > >v;
int main(){
  ll n,a,b;
  cin >> n >> a >> b;
  ll k=gcd(a,(b+1));
  k=a/k;
  ll y=1e18;
  for(int i=1;i<=n;i++){
    ll l,r;
    cin >> l >> r;
    if(y/b>=k){
      if(k*b<=(r-l+1)){
        cout << k*b;
        return 0;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:47:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<long long int, long long int>, std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |  for(int i=0;i<v.size();i++){
      |              ~^~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 20 / 20
• Subtask 7: 20 / 20
• Subtask 8: 30 / 30