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Submission #781553

# Submission time Handle Problem Language Result Execution time Memory
781553 2023-07-13T07:56:50 Z andecaandeci Strange Device (APIO19_strange_device) C++17
0 / 100
 506 ms 118860 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n,a,b;
ll l[1000005],r[1000005];
ll gcd(ll a, ll b){
    if (b==0) return a;
    return gcd(b,a%b);
}
ll lcm (ll a, ll b){
    return a/gcd(a,b)*b;
}
int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>n>>a>>b;
    ll t;
    ll x;
    if ((b+1)%a==0){
        t=b;
    }
    else{
        t=a*b;
    }
    // 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]=1;
            r[i]=t;
        }
        else{
            ll q=r[i]-l[i];
            ll p=l[i]%t;
            l[i]=p;
            r[i]=l[i]+q;
        }
        st.insert({l[i],r[i]});
        // cout<<l[i]<<" "<<r[i]<<endl;
    }
    vector <pair<ll,ll>> pasang;
    for (auto z:st){
        pasang.push_back(z);
        // cout<<z.first<<" "<<z.second<<endl;
    }
    // sort(pasang+1,pasang+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});
    for (int i=1;i<=n;i++){
        if (pasang[i].first<last){
            last=pasang[i].second;
        }
        else{
            jawab.push_back({previous,last});
            previous=pasang[i].first;
            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<<"  "<<ans;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:66:19: 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]
   66 |     for (int i=0;i<jawab.size();i++){
      |                  ~^~~~~~~~~~~~~
strange_device.cpp:17:8: warning: unused variable 'x' [-Wunused-variable]
   17 |     ll x;
      |        ^

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 5 ms 1616 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Incorrect 1 ms 340 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 506 ms 118860 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 506 ms 118860 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 506 ms 118860 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 47 ms 12688 KB Output is correct
3 Correct 44 ms 12780 KB Output is correct
4 Correct 497 ms 118852 KB Output is correct
5 Correct 48 ms 12732 KB Output is correct
6 Correct 45 ms 12744 KB Output is correct
7 Correct 45 ms 12724 KB Output is correct
8 Correct 45 ms 12740 KB Output is correct
9 Correct 45 ms 12756 KB Output is correct
10 Correct 51 ms 12772 KB Output is correct
11 Correct 57 ms 12712 KB Output is correct
12 Correct 46 ms 12684 KB Output is correct
13 Correct 46 ms 12704 KB Output is correct
14 Incorrect 490 ms 118780 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 5 ms 1616 KB Output isn't correct
3 Halted 0 ms 0 KB -