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Submission #732988

# Submission time Handle Problem Language Result Execution time Memory
732988 2023-04-30T00:58:57 Z boyliguanhan Strange Device (APIO19_strange_device) C++17
15 / 100
 479 ms 16968 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;
    }
    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
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 5 ms 724 KB Output isn't correct
3 Halted 0 ms 0 KB -

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 1 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
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 1 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 408 ms 16932 KB Output is correct
3 Correct 394 ms 16820 KB Output is correct
4 Correct 408 ms 16968 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 408 ms 16932 KB Output is correct
3 Correct 394 ms 16820 KB Output is correct
4 Correct 408 ms 16968 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 407 ms 16940 KB Output is correct
7 Correct 404 ms 16780 KB Output is correct
8 Correct 414 ms 16900 KB Output is correct
9 Correct 421 ms 16816 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 408 ms 16932 KB Output is correct
3 Correct 394 ms 16820 KB Output is correct
4 Correct 408 ms 16968 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 40 ms 2472 KB Output is correct
7 Correct 40 ms 2512 KB Output is correct
8 Correct 37 ms 2408 KB Output is correct
9 Correct 40 ms 2776 KB Output is correct
10 Correct 47 ms 2504 KB Output is correct
11 Correct 43 ms 2504 KB Output is correct
12 Correct 39 ms 2420 KB Output is correct
13 Correct 44 ms 2420 KB Output is correct
14 Correct 37 ms 2424 KB Output is correct
15 Incorrect 43 ms 2484 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 46 ms 2412 KB Output is correct
3 Correct 50 ms 2528 KB Output is correct
4 Correct 479 ms 16844 KB Output is correct
5 Correct 42 ms 2416 KB Output is correct
6 Correct 44 ms 2528 KB Output is correct
7 Correct 41 ms 2412 KB Output is correct
8 Correct 43 ms 2504 KB Output is correct
9 Correct 44 ms 2536 KB Output is correct
10 Correct 42 ms 2512 KB Output is correct
11 Correct 48 ms 2504 KB Output is correct
12 Correct 39 ms 2388 KB Output is correct
13 Correct 42 ms 2456 KB Output is correct
14 Incorrect 433 ms 16900 KB Output isn't correct
15 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 Incorrect 5 ms 724 KB Output isn't correct
3 Halted 0 ms 0 KB -