oj.uz

Submission #781549

# Submission time Handle Problem Language Result Execution time Memory
781549 2023-07-13T07:54:16 Z kebine Strange Device (APIO19_strange_device) C++17
0 / 100
 498 ms 118876 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){
            r[i]=1;
            l[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 0 ms 212 KB Output is correct
2 Incorrect 5 ms 1612 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 Incorrect 1 ms 212 KB Output isn't correct
3 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 476 ms 118876 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 476 ms 118876 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 476 ms 118876 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 46 ms 12728 KB Output is correct
3 Correct 46 ms 12716 KB Output is correct
4 Correct 471 ms 118820 KB Output is correct
5 Correct 45 ms 12760 KB Output is correct
6 Correct 48 ms 12732 KB Output is correct
7 Correct 59 ms 12688 KB Output is correct
8 Correct 46 ms 12732 KB Output is correct
9 Correct 48 ms 12808 KB Output is correct
10 Correct 43 ms 12780 KB Output is correct
11 Correct 50 ms 12780 KB Output is correct
12 Correct 48 ms 12800 KB Output is correct
13 Correct 59 ms 12772 KB Output is correct
14 Incorrect 498 ms 118804 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 5 ms 1612 KB Output isn't correct
3 Halted 0 ms 0 KB -