oj.uz

Submission #1003743

# Submission time Handle Problem Language Result Execution time Memory
1003743 2024-06-20T16:43:56 Z underwaterkillerwhale Strange Device (APIO19_strange_device) C++17
65 / 100
 345 ms 69820 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
 
int n;
ll a, b;
ll l[1000002], r[1000002];
 
int main(){
    scanf("%d %lld %lld", &n, &a, &b);
    for(int i=1; i<=n; i++) scanf("%lld %lld", &l[i], &r[i]);
 
    if(1000000000000000000LL / a + 1 <= b){
        ll ans = 0;
        for(int i=1; i<=n; i++) ans += r[i] - l[i] + 1;
        printf("%lld", ans);
        return 0;
    }
 
    a = (a/__gcd(a, b+1)) * b;
    
 
    vector<pair<ll, ll> > vec;
    for(int i=1; i<=n; i++){
        if(l[i]%a <= r[i]%a) vec.push_back(make_pair(l[i]%a, r[i]%a));
        else{
            vec.push_back(make_pair(0, r[i]%a));
            vec.push_back(make_pair(l[i]%a, a-1));
        }
    }
    sort(vec.begin(), vec.end());
 
    ll ans = 0;
    ll rMax = vec[0].second;
    ll lPnt = vec[0].first;
    for(int i=0; i<(int)vec.size(); i++){
        rMax = max(rMax, vec[i].second);
        if(i<(int)vec.size()-1 && rMax < vec[i+1].first){
            ans += rMax - lPnt + 1;
            lPnt = vec[i+1].first;
        }
        else if(i==(int)vec.size()-1){
            ans += rMax - lPnt + 1;
        }
        else{
            rMax = max(rMax, vec[i].second);
        }
    }
    printf("%lld", ans);
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |     scanf("%d %lld %lld", &n, &a, &b);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
strange_device.cpp:13:34: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |     for(int i=1; i<=n; i++) scanf("%lld %lld", &l[i], &r[i]);
      |                             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 4 ms 1372 KB Output is correct
3 Correct 3 ms 1372 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 440 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 444 KB Output is correct
16 Correct 4 ms 1368 KB Output is correct
17 Correct 35 ms 7880 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 356 KB Output is correct
2 Incorrect 0 ms 352 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 251 ms 57796 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 290 ms 69560 KB Output is correct
3 Correct 300 ms 69564 KB Output is correct
4 Correct 280 ms 69712 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 290 ms 69560 KB Output is correct
3 Correct 300 ms 69564 KB Output is correct
4 Correct 280 ms 69712 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 309 ms 69692 KB Output is correct
7 Correct 285 ms 69564 KB Output is correct
8 Correct 289 ms 69820 KB Output is correct
9 Correct 343 ms 69560 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 290 ms 69560 KB Output is correct
3 Correct 300 ms 69564 KB Output is correct
4 Correct 280 ms 69712 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 28 ms 7660 KB Output is correct
7 Correct 30 ms 7808 KB Output is correct
8 Correct 28 ms 7880 KB Output is correct
9 Correct 31 ms 7900 KB Output is correct
10 Correct 28 ms 7880 KB Output is correct
11 Correct 29 ms 7656 KB Output is correct
12 Correct 28 ms 7888 KB Output is correct
13 Correct 31 ms 7732 KB Output is correct
14 Correct 27 ms 7704 KB Output is correct
15 Correct 33 ms 7880 KB Output is correct
16 Correct 31 ms 7888 KB Output is correct
17 Correct 29 ms 7696 KB Output is correct
18 Correct 272 ms 69560 KB Output is correct
19 Correct 293 ms 69604 KB Output is correct
20 Correct 329 ms 69596 KB Output is correct
21 Correct 34 ms 7876 KB Output is correct
22 Correct 27 ms 7884 KB Output is correct
23 Correct 87 ms 26496 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 596 KB Output is correct
2 Correct 31 ms 7880 KB Output is correct
3 Correct 32 ms 7848 KB Output is correct
4 Correct 303 ms 69684 KB Output is correct
5 Correct 30 ms 7888 KB Output is correct
6 Correct 34 ms 7848 KB Output is correct
7 Correct 31 ms 7876 KB Output is correct
8 Correct 32 ms 7684 KB Output is correct
9 Correct 30 ms 7888 KB Output is correct
10 Correct 31 ms 7660 KB Output is correct
11 Correct 31 ms 7884 KB Output is correct
12 Correct 28 ms 7900 KB Output is correct
13 Correct 31 ms 7880 KB Output is correct
14 Correct 331 ms 69596 KB Output is correct
15 Correct 59 ms 7876 KB Output is correct
16 Correct 345 ms 69600 KB Output is correct
17 Correct 288 ms 69672 KB Output is correct
18 Correct 0 ms 348 KB Output is correct

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 4 ms 1372 KB Output is correct
3 Correct 3 ms 1372 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 440 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 444 KB Output is correct
16 Correct 4 ms 1368 KB Output is correct
17 Correct 35 ms 7880 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 356 KB Output is correct
20 Incorrect 0 ms 352 KB Output isn't correct
21 Halted 0 ms 0 KB -