oj.uz

Submission #713510

# Submission time Handle Problem Language Result Execution time Memory
713510 2023-03-22T10:48:04 Z bin9638 Strange Device (APIO19_strange_device) C++17
10 / 100
 658 ms 76820 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define N 2000010
#define ii pair<int,int>
#define fs first
#define sc second
#define ld double
#define int ll

const int MAX_VAL=2e18;

int cnt[N],n,A,B,dem=0,ans=0;
vector<int>s;

void sub_AB()
{
    int res=0;
    for(int i=1;i<=n;i++)
    {
        int l,r;
        cin>>l>>r;
        res+=(r-l+1);
    }
    cout<<res;
    exit(0);
}

ii a[N];

int32_t main()
{
    #ifdef SKY
    freopen("A.inp","r",stdin);
    freopen("A.out","w",stdout);
    #endif // SKY
    ios::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>n>>A>>B;
    if(MAX_VAL/A<=B)
        sub_AB();
    for(int i=1;i<=n;i++)
    {
        int l,r;
        cin>>l>>r;
        if(r-l+1>=A*B)
        {
            cout<<A*B;
            return 0;
        }
        int lef=l%(A*B),righ=r%(A*B);
        if(lef<=righ)
        {
            a[++dem]={lef,righ};
        }else
        {
            a[++dem]={lef,A*B-1};
            a[++dem]={0,righ};
        }
    }
    for(int i=1;i<=dem;i++)
    {
        s.pb(a[i].fs);
        s.pb(a[i].sc+1);
    }
    sort(s.begin(),s.end());
    s.erase(unique(s.begin(),s.end()),s.end());
    for(int i=1;i<=dem;i++)
    {
        cnt[lower_bound(s.begin(),s.end(),a[i].fs)-s.begin()]++;
        cnt[lower_bound(s.begin(),s.end(),a[i].sc+1)-s.begin()]--;
    }
    for(int i=0;i<s.size()-1;i++)
    {
        if(i>0)
            cnt[i]+=cnt[i-1];
        if(cnt[i]>0)
            ans+=(s[i+1]-s[i]);
    }
    cout<<ans;
    return 0;
}

Compilation message

strange_device.cpp: In function 'int32_t main()':
strange_device.cpp:77:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |     for(int i=0;i<s.size()-1;i++)
      |                 ~^~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 6 ms 856 KB Output is correct
3 Correct 6 ms 856 KB Output is correct
4 Incorrect 1 ms 212 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 326 ms 57632 KB Output is correct

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 525 ms 39520 KB Output is correct
3 Incorrect 554 ms 76820 KB Output isn't correct
4 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 Correct 525 ms 39520 KB Output is correct
3 Incorrect 554 ms 76820 KB Output isn't correct
4 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 Correct 525 ms 39520 KB Output is correct
3 Incorrect 554 ms 76820 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 58 ms 4340 KB Output is correct
3 Correct 60 ms 8012 KB Output is correct
4 Correct 658 ms 76732 KB Output is correct
5 Correct 64 ms 8004 KB Output is correct
6 Correct 61 ms 7972 KB Output is correct
7 Correct 64 ms 8072 KB Output is correct
8 Correct 61 ms 7992 KB Output is correct
9 Correct 60 ms 8072 KB Output is correct
10 Correct 61 ms 7984 KB Output is correct
11 Correct 58 ms 8148 KB Output is correct
12 Correct 54 ms 8048 KB Output is correct
13 Correct 60 ms 7976 KB Output is correct
14 Correct 612 ms 76788 KB Output is correct
15 Incorrect 60 ms 8100 KB Output isn't correct
16 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 Correct 6 ms 856 KB Output is correct
3 Correct 6 ms 856 KB Output is correct
4 Incorrect 1 ms 212 KB Output isn't correct
5 Halted 0 ms 0 KB -