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Submission #733007

# Submission time Handle Problem Language Result Execution time Memory
733007 2023-04-30T02:13:39 Z boyliguanhan Strange Device (APIO19_strange_device) C++17
100 / 100
 471 ms 18640 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long
int len;
bool merged[2000100];
struct range {
    int l, r;
    bool operator < (range against) {
        return l < against.l;
    }
};
vector<range> ranges;
int gcd(int a, int b) {
    if(!b)
        return a;
    return gcd(b, a%b);
}
signed main() {
    cin.sync_with_stdio(false);
    cin.tie(nullptr);
    int n, a, b;
    cin >> n >> a >> b;
    __int128_t temp = b;
    temp*=a/gcd(a, b+1);
    if(temp>1e18)
        len = 2e18;
    else
        len = temp;
    for(int i = 0; i < n; i++) {
        int l, r;
        cin >> l >> r;
        if(r-l+1 >= len) {
            cout << len << '\n';
            return 0;
        }
        l%=len, r%=len;
        if(l > r) {
            ranges.push_back({l, len-1});
            ranges.push_back({0, r});
        } else {
            ranges.push_back({l, r});
        }
    }
    sort(ranges.begin(), ranges.end());
    for(int i = 1; i < ranges.size(); i++) {
        if(ranges[i].l <= ranges[i-1].r)
            ranges[i].l = ranges[i-1].l, merged[i-1] = 1, ranges[i].r = max(ranges[i].r, ranges[i-1].r);
    }
    int ans = 0;
    for(int i = 0; i < ranges.size(); i++)
        if(!merged[i])
            ans+=ranges[i].r-ranges[i].l+1;
    cout << ans << '\n';
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:45:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<range>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |     for(int i = 1; i < ranges.size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~
strange_device.cpp:50:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<range>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for(int i = 0; i < ranges.size(); i++)
      |                    ~~^~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 4 ms 708 KB Output is correct
3 Correct 5 ms 1068 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 288 KB Output is correct
13 Correct 1 ms 328 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 984 KB Output is correct
17 Correct 47 ms 3248 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 1 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 283 ms 17956 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 386 ms 16768 KB Output is correct
3 Correct 374 ms 16936 KB Output is correct
4 Correct 368 ms 16860 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 386 ms 16768 KB Output is correct
3 Correct 374 ms 16936 KB Output is correct
4 Correct 368 ms 16860 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 398 ms 16888 KB Output is correct
7 Correct 372 ms 16940 KB Output is correct
8 Correct 371 ms 16768 KB Output is correct
9 Correct 402 ms 16800 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 386 ms 16768 KB Output is correct
3 Correct 374 ms 16936 KB Output is correct
4 Correct 368 ms 16860 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 44 ms 2476 KB Output is correct
7 Correct 41 ms 2508 KB Output is correct
8 Correct 37 ms 2440 KB Output is correct
9 Correct 38 ms 2500 KB Output is correct
10 Correct 37 ms 2452 KB Output is correct
11 Correct 38 ms 2420 KB Output is correct
12 Correct 37 ms 2408 KB Output is correct
13 Correct 40 ms 2472 KB Output is correct
14 Correct 38 ms 2536 KB Output is correct
15 Correct 41 ms 2512 KB Output is correct
16 Correct 45 ms 4300 KB Output is correct
17 Correct 42 ms 3988 KB Output is correct
18 Correct 404 ms 17924 KB Output is correct
19 Correct 380 ms 17632 KB Output is correct
20 Correct 427 ms 17768 KB Output is correct
21 Correct 48 ms 4128 KB Output is correct
22 Correct 41 ms 3932 KB Output is correct
23 Correct 119 ms 10200 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 41 ms 2464 KB Output is correct
3 Correct 41 ms 2504 KB Output is correct
4 Correct 454 ms 16836 KB Output is correct
5 Correct 43 ms 2444 KB Output is correct
6 Correct 40 ms 2456 KB Output is correct
7 Correct 40 ms 2424 KB Output is correct
8 Correct 42 ms 2512 KB Output is correct
9 Correct 40 ms 2512 KB Output is correct
10 Correct 40 ms 2512 KB Output is correct
11 Correct 42 ms 2512 KB Output is correct
12 Correct 36 ms 2424 KB Output is correct
13 Correct 39 ms 2496 KB Output is correct
14 Correct 405 ms 17064 KB Output is correct
15 Correct 49 ms 3980 KB Output is correct
16 Correct 395 ms 18640 KB Output is correct
17 Correct 389 ms 18568 KB Output is correct
18 Correct 1 ms 212 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 4 ms 708 KB Output is correct
3 Correct 5 ms 1068 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 328 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 288 KB Output is correct
13 Correct 1 ms 328 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 4 ms 984 KB Output is correct
17 Correct 47 ms 3248 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 283 ms 17956 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 386 ms 16768 KB Output is correct
31 Correct 374 ms 16936 KB Output is correct
32 Correct 368 ms 16860 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 398 ms 16888 KB Output is correct
35 Correct 372 ms 16940 KB Output is correct
36 Correct 371 ms 16768 KB Output is correct
37 Correct 402 ms 16800 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 44 ms 2476 KB Output is correct
40 Correct 41 ms 2508 KB Output is correct
41 Correct 37 ms 2440 KB Output is correct
42 Correct 38 ms 2500 KB Output is correct
43 Correct 37 ms 2452 KB Output is correct
44 Correct 38 ms 2420 KB Output is correct
45 Correct 37 ms 2408 KB Output is correct
46 Correct 40 ms 2472 KB Output is correct
47 Correct 38 ms 2536 KB Output is correct
48 Correct 41 ms 2512 KB Output is correct
49 Correct 45 ms 4300 KB Output is correct
50 Correct 42 ms 3988 KB Output is correct
51 Correct 404 ms 17924 KB Output is correct
52 Correct 380 ms 17632 KB Output is correct
53 Correct 427 ms 17768 KB Output is correct
54 Correct 48 ms 4128 KB Output is correct
55 Correct 41 ms 3932 KB Output is correct
56 Correct 119 ms 10200 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 41 ms 2464 KB Output is correct
59 Correct 41 ms 2504 KB Output is correct
60 Correct 454 ms 16836 KB Output is correct
61 Correct 43 ms 2444 KB Output is correct
62 Correct 40 ms 2456 KB Output is correct
63 Correct 40 ms 2424 KB Output is correct
64 Correct 42 ms 2512 KB Output is correct
65 Correct 40 ms 2512 KB Output is correct
66 Correct 40 ms 2512 KB Output is correct
67 Correct 42 ms 2512 KB Output is correct
68 Correct 36 ms 2424 KB Output is correct
69 Correct 39 ms 2496 KB Output is correct
70 Correct 405 ms 17064 KB Output is correct
71 Correct 49 ms 3980 KB Output is correct
72 Correct 395 ms 18640 KB Output is correct
73 Correct 389 ms 18568 KB Output is correct
74 Correct 1 ms 212 KB Output is correct
75 Correct 1 ms 212 KB Output is correct
76 Correct 1 ms 212 KB Output is correct
77 Correct 1 ms 212 KB Output is correct
78 Correct 1 ms 212 KB Output is correct
79 Correct 5 ms 984 KB Output is correct
80 Correct 447 ms 16928 KB Output is correct
81 Correct 471 ms 16840 KB Output is correct
82 Correct 416 ms 16940 KB Output is correct
83 Correct 416 ms 16908 KB Output is correct
84 Correct 413 ms 17024 KB Output is correct
85 Correct 411 ms 16928 KB Output is correct
86 Correct 126 ms 10036 KB Output is correct
87 Correct 1 ms 340 KB Output is correct