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Submission #1107610

# Submission time Handle Problem Language Result Execution time Memory
1107610 2024-11-01T17:06:22 Z arnavsrivastava0123 Strange Device (APIO19_strange_device) C++17
100 / 100
 350 ms 54188 KB 
#include <bits/stdc++.h>

using namespace std;

const long long INF = 1e18 + 7;
 
void solve(){
   long long n, A, B; cin >> n >> A >> B;
   A = A / gcd(A, B + 1);
   long long MOD = A * B;
   long long ans = 0;
   vector<pair<long long, long long>> intervals;
   for(int i = 0; i < n;i++){
      long long L, R; cin >> L >> R;
      if(L / MOD == R / MOD){
        intervals.push_back({L % MOD, R % MOD});
      }else if(L / MOD + 1 == R / MOD){
        intervals.push_back({L % MOD, MOD - 1});
        intervals.push_back({0, R % MOD});
      }else if(R / MOD >= L / MOD + 2){
        cout << MOD << '\n';
        return;
      }
   }
   sort(intervals.begin(), intervals.end());
   long long last = intervals[0].second + 1;
   ans = intervals[0].second - intervals[0].first + 1;
   for(int i = 1; i < intervals.size();i++){
      ans += max(0LL, intervals[i].second - max(intervals[i].first, last) + 1);
      last = max(last, intervals[i].second + 1);
   }
   cout << ans << '\n';
}
 
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
 
int T = 1; //cin >> T;
while(T--){
  solve();
}
}
/*
how many unique  pairs (t + t / B % A, t % B)

*/

Compilation message

strange_device.cpp: In function 'void solve()':
strange_device.cpp:28:21: 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]
   28 |    for(int i = 1; i < intervals.size();i++){
      |                   ~~^~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 4 ms 724 KB Output is correct
3 Correct 4 ms 844 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 516 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 34 ms 3532 KB Output is correct
18 Correct 1 ms 336 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 193 ms 18864 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 259 ms 18864 KB Output is correct
3 Correct 264 ms 18864 KB Output is correct
4 Correct 277 ms 18864 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 259 ms 18864 KB Output is correct
3 Correct 264 ms 18864 KB Output is correct
4 Correct 277 ms 18864 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 270 ms 19024 KB Output is correct
7 Correct 272 ms 19004 KB Output is correct
8 Correct 264 ms 18864 KB Output is correct
9 Correct 285 ms 18864 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 259 ms 18864 KB Output is correct
3 Correct 264 ms 18864 KB Output is correct
4 Correct 277 ms 18864 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 27 ms 3532 KB Output is correct
7 Correct 28 ms 3468 KB Output is correct
8 Correct 35 ms 3532 KB Output is correct
9 Correct 27 ms 3532 KB Output is correct
10 Correct 28 ms 3532 KB Output is correct
11 Correct 27 ms 3532 KB Output is correct
12 Correct 25 ms 3532 KB Output is correct
13 Correct 28 ms 3544 KB Output is correct
14 Correct 25 ms 3532 KB Output is correct
15 Correct 30 ms 3532 KB Output is correct
16 Correct 28 ms 3532 KB Output is correct
17 Correct 27 ms 3532 KB Output is correct
18 Correct 251 ms 18832 KB Output is correct
19 Correct 244 ms 18852 KB Output is correct
20 Correct 269 ms 18868 KB Output is correct
21 Correct 28 ms 3532 KB Output is correct
22 Correct 25 ms 3536 KB Output is correct
23 Correct 75 ms 10824 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 504 KB Output is correct
2 Correct 28 ms 3532 KB Output is correct
3 Correct 28 ms 3532 KB Output is correct
4 Correct 278 ms 18864 KB Output is correct
5 Correct 29 ms 3532 KB Output is correct
6 Correct 28 ms 3548 KB Output is correct
7 Correct 37 ms 3532 KB Output is correct
8 Correct 29 ms 3520 KB Output is correct
9 Correct 30 ms 3704 KB Output is correct
10 Correct 28 ms 3532 KB Output is correct
11 Correct 28 ms 3544 KB Output is correct
12 Correct 27 ms 3616 KB Output is correct
13 Correct 28 ms 3700 KB Output is correct
14 Correct 303 ms 19008 KB Output is correct
15 Correct 30 ms 3532 KB Output is correct
16 Correct 295 ms 18872 KB Output is correct
17 Correct 268 ms 19044 KB Output is correct
18 Correct 1 ms 336 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 4 ms 724 KB Output is correct
3 Correct 4 ms 844 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 516 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 34 ms 3532 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 193 ms 18864 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 259 ms 18864 KB Output is correct
31 Correct 264 ms 18864 KB Output is correct
32 Correct 277 ms 18864 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 270 ms 19024 KB Output is correct
35 Correct 272 ms 19004 KB Output is correct
36 Correct 264 ms 18864 KB Output is correct
37 Correct 285 ms 18864 KB Output is correct
38 Correct 1 ms 336 KB Output is correct
39 Correct 27 ms 3532 KB Output is correct
40 Correct 28 ms 3468 KB Output is correct
41 Correct 35 ms 3532 KB Output is correct
42 Correct 27 ms 3532 KB Output is correct
43 Correct 28 ms 3532 KB Output is correct
44 Correct 27 ms 3532 KB Output is correct
45 Correct 25 ms 3532 KB Output is correct
46 Correct 28 ms 3544 KB Output is correct
47 Correct 25 ms 3532 KB Output is correct
48 Correct 30 ms 3532 KB Output is correct
49 Correct 28 ms 3532 KB Output is correct
50 Correct 27 ms 3532 KB Output is correct
51 Correct 251 ms 18832 KB Output is correct
52 Correct 244 ms 18852 KB Output is correct
53 Correct 269 ms 18868 KB Output is correct
54 Correct 28 ms 3532 KB Output is correct
55 Correct 25 ms 3536 KB Output is correct
56 Correct 75 ms 10824 KB Output is correct
57 Correct 1 ms 504 KB Output is correct
58 Correct 28 ms 3532 KB Output is correct
59 Correct 28 ms 3532 KB Output is correct
60 Correct 278 ms 18864 KB Output is correct
61 Correct 29 ms 3532 KB Output is correct
62 Correct 28 ms 3548 KB Output is correct
63 Correct 37 ms 3532 KB Output is correct
64 Correct 29 ms 3520 KB Output is correct
65 Correct 30 ms 3704 KB Output is correct
66 Correct 28 ms 3532 KB Output is correct
67 Correct 28 ms 3544 KB Output is correct
68 Correct 27 ms 3616 KB Output is correct
69 Correct 28 ms 3700 KB Output is correct
70 Correct 303 ms 19008 KB Output is correct
71 Correct 30 ms 3532 KB Output is correct
72 Correct 295 ms 18872 KB Output is correct
73 Correct 268 ms 19044 KB Output is correct
74 Correct 1 ms 336 KB Output is correct
75 Correct 1 ms 336 KB Output is correct
76 Correct 1 ms 336 KB Output is correct
77 Correct 1 ms 336 KB Output is correct
78 Correct 1 ms 336 KB Output is correct
79 Correct 4 ms 1104 KB Output is correct
80 Correct 317 ms 53944 KB Output is correct
81 Correct 331 ms 54184 KB Output is correct
82 Correct 309 ms 54188 KB Output is correct
83 Correct 310 ms 54076 KB Output is correct
84 Correct 325 ms 54056 KB Output is correct
85 Correct 350 ms 53928 KB Output is correct
86 Correct 82 ms 20532 KB Output is correct
87 Correct 1 ms 336 KB Output is correct