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Submission #366559

# Submission time Handle Problem Language Result Execution time Memory
366559 2021-02-14T13:56:22 Z Nima_Naderi Strange Device (APIO19_strange_device) C++14
20 / 100
 1168 ms 165196 KB 
///In the name of GOD
//#pragma GCC optimize("O2")
#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
const ll MXN = 1e6 + 10;
const ll INF = 1e18;
ll n, A, B, g, k, m;
ll L[MXN], R[MXN], cnt[MXN];
vector<ll> Num;
vector<pair<ll, ll>> seg;
inline int GetId(ll x){
    return lower_bound(Num.begin(), Num.end(), x) - Num.begin();
}
int main(){
    ios::sync_with_stdio(0);cin.tie(0); cout.tie(0);
    cin >> n >> A >> B;
    g = __gcd(A, B + 1);
    k = (A / g);
    m = (k > (INF + B - 1) / B ? INF + 1 : k * B);
    for(int i = 1; i <= n; i ++){
        cin >> L[i] >> R[i];
        if(R[i] - L[i] + 1 >= m) return cout << m, 0;
        L[i] %= m, R[i] %= m;
        Num.push_back(L[i]), Num.push_back(R[i]), Num.push_back((R[i] + 1) % m);
        if(R[i] < L[i]){
            seg.push_back({L[i], m - 1});
            seg.push_back({0, R[i]});
        }
        else{
            seg.push_back({L[i], R[i]});
        }
    }
    Num.push_back(0), Num.push_back(m - 1);
    Num.push_back(1), Num.push_back(m);
    sort(Num.begin(), Num.end());
    Num.resize(unique(Num.begin(), Num.end()) - Num.begin());
    sort(seg.begin(), seg.end());
    for(auto LR : seg){
        ll l, r; tie(l, r) = LR;
        cnt[GetId(l)] ++, cnt[GetId(r + 1)] --;
    }
    ll ans = 0, bal = 0, len;
    for(int i = 0; i < Num.size() - 1; i ++){
        len = (Num[i + 1] - 1) - Num[i] + 1;
        bal += cnt[i];
        assert(bal >= 0);
        if(bal > 0) ans += len;
    }
    cout << ans << '\n';
    return 0;
}
/*!
    HE'S AN INSTIGATOR,
    ENEMY ELIMINATOR,
    AND WHEN HE KNOCKS YOU BETTER
    YOU BETTER LET HIM IN.
*/
//! N.N

Compilation message

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

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 9 ms 1640 KB Output is correct
3 Correct 9 ms 1660 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 44 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 8 ms 1640 KB Output is correct
17 Correct 127 ms 10832 KB Output is correct
18 Correct 1 ms 364 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 488 ms 80724 KB Output is correct

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 881 ms 100704 KB Output is correct
3 Correct 969 ms 100464 KB Output is correct
4 Runtime error 916 ms 165196 KB Execution killed with signal 6

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 881 ms 100704 KB Output is correct
3 Correct 969 ms 100464 KB Output is correct
4 Runtime error 916 ms 165196 KB Execution killed with signal 6

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 881 ms 100704 KB Output is correct
3 Correct 969 ms 100464 KB Output is correct
4 Runtime error 916 ms 165196 KB Execution killed with signal 6

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 104 ms 11368 KB Output is correct
3 Correct 102 ms 11296 KB Output is correct
4 Incorrect 1168 ms 100448 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 9 ms 1640 KB Output is correct
3 Correct 9 ms 1660 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 44 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 8 ms 1640 KB Output is correct
17 Correct 127 ms 10832 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 492 KB Output is correct
26 Correct 1 ms 492 KB Output is correct
27 Correct 1 ms 492 KB Output is correct
28 Correct 488 ms 80724 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 881 ms 100704 KB Output is correct
31 Correct 969 ms 100464 KB Output is correct
32 Runtime error 916 ms 165196 KB Execution killed with signal 6