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Submission #781597

# Submission time Handle Problem Language Result Execution time Memory
781597 2023-07-13T08:30:29 Z kebine Strange Device (APIO19_strange_device) C++17
0 / 100
 494 ms 119112 KB 
#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;
    ll t;
    ll x;
    if ((b+1)%a==0){
        if (b>1000005){
            t=1000005;
        }
        else
            t=b;
    }
    else{
        if (b>1000005||a>1000005||a*b>1000005){
            t=1000005;
        }
        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]=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)
            st.insert({l[i],r[i]});
        else{
            st.insert({l[i],t-1});
            st.insert({0,1+(u-(t-l[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});
    sort(pasang.begin(),pasang.end());
    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:73:19: 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]
   73 |     for (int i=0;i<jawab.size();i++){
      |                  ~^~~~~~~~~~~~~
strange_device.cpp:10:8: warning: unused variable 'x' [-Wunused-variable]
   10 |     ll x;
      |        ^

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 464 KB Output is correct
2 Incorrect 5 ms 2004 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 468 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 494 ms 119112 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 494 ms 119112 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 494 ms 119112 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Incorrect 41 ms 11436 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 464 KB Output is correct
2 Incorrect 5 ms 2004 KB Output isn't correct
3 Halted 0 ms 0 KB -