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Submission #821848

# Submission time Handle Problem Language Result Execution time Memory
821848 2023-08-11T19:21:45 Z 7mody Strange Device (APIO19_strange_device) C++17
35 / 100
 400 ms 63524 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

void solve(){
    ll n,a,b; cin >> n >> a >> b;
    vector<pair<ll,ll>> arr(n);
    ll curr=0;
    for(int i=0; i < n;i++){
        cin >> arr[i].first >> arr[i].second;
        curr+=arr[i].second - arr[i].first +1;
    }
    ll x=a/(__gcd(b+1,a));
    ll maxi=x*b;
    if((arr[n-1].second-1)< maxi){
        cout << curr << endl;
        return;
    }
    vector<pair<ll,ll>> ans;
    for(int i=0; i < n;i++){
        if(arr[i].second - arr[i].first +1>=maxi){
            cout << maxi << endl;
            return;
        }
        arr[i].second%=maxi;
        arr[i].first%=maxi;
        if(arr[i].first > arr[i].second){
            ans.push_back({arr[i].first,maxi-1});
            ans.push_back({0,arr[i].second});
        } else{
            ans.push_back({arr[i].first, arr[i].second});
        }
    }
    sort(ans.begin(),ans.end());
    vector<pair<ll,ll>> add;
    curr=-1;
    for(auto c: ans){
        if(curr==-1){
            curr=0;
            add.push_back(c);
        } else if(c.first > add[curr].second){
            add.push_back(c);
            curr++;
        } else{
            add[curr].second=max(add[curr].second,c.second);
        }
    }
    ll out=0;
    for(auto c : add) out += c.second - c.first +1;
    cout << out << endl;
}

int main(){
    ios::sync_with_stdio(false);cout.tie();cin.tie();
    int t=1;
    // cin >> t;
    while(t--){
        solve();
    }
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 4 ms 1368 KB Output is correct
3 Correct 5 ms 1380 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 320 KB Output is correct
9 Correct 0 ms 316 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 320 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 1376 KB Output is correct
17 Correct 37 ms 10176 KB Output is correct
18 Incorrect 0 ms 212 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 324 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 320 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Incorrect 0 ms 212 KB Output isn't correct
6 Halted 0 ms 0 KB -

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 328 KB Output is correct
5 Correct 232 ms 32740 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 368 ms 63416 KB Output is correct
3 Correct 353 ms 63376 KB Output is correct
4 Correct 363 ms 63412 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 368 ms 63416 KB Output is correct
3 Correct 353 ms 63376 KB Output is correct
4 Correct 363 ms 63412 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 348 ms 63352 KB Output is correct
7 Correct 362 ms 63484 KB Output is correct
8 Correct 348 ms 63468 KB Output is correct
9 Correct 378 ms 63444 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 368 ms 63416 KB Output is correct
3 Correct 353 ms 63376 KB Output is correct
4 Correct 363 ms 63412 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 33 ms 10192 KB Output is correct
7 Correct 36 ms 10188 KB Output is correct
8 Correct 33 ms 10176 KB Output is correct
9 Correct 33 ms 10176 KB Output is correct
10 Correct 38 ms 10188 KB Output is correct
11 Correct 34 ms 10200 KB Output is correct
12 Correct 32 ms 10236 KB Output is correct
13 Correct 37 ms 10176 KB Output is correct
14 Correct 33 ms 10172 KB Output is correct
15 Correct 36 ms 10192 KB Output is correct
16 Correct 35 ms 10176 KB Output is correct
17 Correct 32 ms 10168 KB Output is correct
18 Correct 331 ms 56840 KB Output is correct
19 Correct 331 ms 56700 KB Output is correct
20 Correct 362 ms 56708 KB Output is correct
21 Correct 43 ms 10200 KB Output is correct
22 Correct 31 ms 10172 KB Output is correct
23 Correct 97 ms 21616 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 36 ms 10172 KB Output is correct
3 Correct 35 ms 10176 KB Output is correct
4 Correct 400 ms 63476 KB Output is correct
5 Correct 35 ms 10192 KB Output is correct
6 Correct 36 ms 10192 KB Output is correct
7 Correct 36 ms 10232 KB Output is correct
8 Correct 36 ms 10244 KB Output is correct
9 Correct 34 ms 10172 KB Output is correct
10 Correct 40 ms 10188 KB Output is correct
11 Correct 35 ms 10188 KB Output is correct
12 Correct 31 ms 10176 KB Output is correct
13 Correct 35 ms 10168 KB Output is correct
14 Correct 360 ms 63524 KB Output is correct
15 Correct 40 ms 10176 KB Output is correct
16 Correct 324 ms 56708 KB Output is correct
17 Correct 325 ms 56644 KB Output is correct
18 Incorrect 1 ms 212 KB Output isn't correct
19 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 4 ms 1368 KB Output is correct
3 Correct 5 ms 1380 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 320 KB Output is correct
9 Correct 0 ms 316 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 320 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 4 ms 1376 KB Output is correct
17 Correct 37 ms 10176 KB Output is correct
18 Incorrect 0 ms 212 KB Output isn't correct
19 Halted 0 ms 0 KB -