Submission #782625

#	Time	Username	Problem	Language	Result	Execution time	Memory
782625		devariaota	Strange Device (APIO19_strange_device)	C++17	Compilation error	0 ms	0 KiB

strange_device

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n,a,b;
ll l[1000005],r[1000005];
int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>n>>a>>b;
    __int128_t t;
    ll x;
    // if ((b+1)%a==0){
    //     t=b;
    // }
    // else{
    //     t=min((__int128_t)a*(__int128_t)b,(__int128_t)1e18);
    // }
    t=min((__int128_t)a*(__int128_t)b/gcd(a,b+1),(__int128_t)1e18;)
    // cout<<t;
    // t=lcm(t,b);
    set <pair<ll,ll>> st;
    for (int i=1;i<=n;i++){
        cin>>l[i]>>r[i];
        ll u=r[i]-l[i]+1;
        if (u>=t){
            l[i]=0;
            r[i]=t-1;
        }
        else{
            ll q=r[i]-l[i];
            ll p=l[i]%t;
            l[i]=p;
            r[i]=l[i]+q;
        }
        if (r[i]<=t-1){
            st.insert({l[i],r[i]});
            // cout<<l[i]<<" "<<r[i]<<endl;
        }
        else{
            st.insert({l[i],t-1});
            // cout<<l[i]<<" "<<t-1<<endl;
            st.insert({0,(u-(t-l[i]))-1});
            // cout<<0<<" "<<(u-(t-l[i]))-1<<endl;
        }
        // cout<<l[i]<<" "<<r[i]<<endl;
    }
    vector <pair<ll,ll>> pasang;
    for (auto z:st){
        pasang.push_back(z);
    }
    sort(pasang.begin()+1,pasang.begin()+n+1);
    vector <pair<ll,ll>> jawab;
    ll last=pasang[0].second,previous=pasang[0].first;
    pasang.push_back({(ll)1e18+100,(ll)1e18+100});
    sort(pasang.begin(),pasang.end());
    for (int i=1;i<pasang.size();i++){
        if (pasang[i].first<=last){
            last=max(last,pasang[i].second);
        }
        else{
            jawab.push_back({previous,last});
            previous=pasang[i].first;
            last=max(last,pasang[i].second);
        }
    }
    // if (previous>jawab[jawab.size()-1].second){
    //     // jawab.push_back({previous,last});
    // }
    ll ans=0;
    for (int i=0;i<jawab.size();i++){
        ans+=jawab[i].second-jawab[i].first+1;
        // cout<<jawab[i].first<<" "<<jawab[i].second<<":::"<<endl;
    }
    cout<<"  "<<ans;
}

Compilation message (stderr)

strange_device.cpp: In function 'int main()':
strange_device.cpp:17:66: error: expected ')' before ';' token
   17 |     t=min((__int128_t)a*(__int128_t)b/gcd(a,b+1),(__int128_t)1e18;)
      |          ~                                                       ^
      |                                                                  )
strange_device.cpp:17:67: error: expected primary-expression before ')' token
   17 |     t=min((__int128_t)a*(__int128_t)b/gcd(a,b+1),(__int128_t)1e18;)
      |                                                                   ^
strange_device.cpp:35:13: error: 'st' was not declared in this scope; did you mean 't'?
   35 |             st.insert({l[i],r[i]});
      |             ^~
      |             t
strange_device.cpp:39:13: error: 'st' was not declared in this scope; did you mean 't'?
   39 |             st.insert({l[i],t-1});
      |             ^~
      |             t
strange_device.cpp:47:17: error: 'st' was not declared in this scope; did you mean 't'?
   47 |     for (auto z:st){
      |                 ^~
      |                 t
strange_device.cpp:55:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |     for (int i=1;i<pasang.size();i++){
      |                  ~^~~~~~~~~~~~~~
strange_device.cpp:69:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |     for (int i=0;i<jawab.size();i++){
      |                  ~^~~~~~~~~~~~~
strange_device.cpp:10:8: warning: unused variable 'x' [-Wunused-variable]
   10 |     ll x;
      |        ^