oj.uz

Submission #681763

# Submission time Handle Problem Language Result Execution time Memory
681763 2023-01-14T08:25:15 Z Cross_Ratio Autobahn (COI21_autobahn) C++14
100 / 100
 123 ms 22088 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
int A[100005];
int B[100005];
int C[100005];
signed main() {
    cin.sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int N, K, X;
    cin >> N >> K >> X;
    int i, j;
    for(i=0;i<N;i++) {
        cin >> A[i] >> B[i] >> C[i];
    }
    vector<array<int, 2>> V;
    for(i=0;i<N;i++) {
        V.push_back({A[i], 1});
        V.push_back({A[i]+B[i], 2});
        V.push_back({C[i]+1, 3});
        V.push_back({A[i]+X, 4});
        V.push_back({A[i]+B[i]+X, 5});
        V.push_back({C[i]+1+X, 6});
    }
    sort(V.begin(),V.end());
    int ans = 0, val = 0, pl = 0, mi = 0, cnt1 = 0, cnt2 = 0;
    int prv = -1;
    for(auto it : V) {
        val += (it[0] - prv) * ( (cnt1 >= K ? pl : 0) - (cnt2 >= K ? mi : 0));
        if(it[1]==1) cnt1++;
        if(it[1]==2) pl++;
        if(it[1]==3) pl--, cnt1--;
        if(it[1]==4) cnt2++;
        if(it[1]==5) mi++;
        if(it[1]==6) mi--, cnt2--;
        prv = it[0];
        ans = max(ans, val);
        //cout << "Add in " << it[0] << ", type is " << it[1] << '\n';
        //cout << val << ' ' << cnt1 << ' ' << pl << ' ' << cnt2 << ' ' << mi << '\n';
    }
    cout << ans;
}

Compilation message

autobahn.cpp: In function 'int main()':
autobahn.cpp:13:12: warning: unused variable 'j' [-Wunused-variable]
   13 |     int i, j;
      |            ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 2 ms 588 KB Output is correct
14 Correct 2 ms 588 KB Output is correct
15 Correct 2 ms 592 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 1 ms 592 KB Output is correct
20 Correct 1 ms 596 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 324 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 468 KB Output is correct
13 Correct 2 ms 588 KB Output is correct
14 Correct 2 ms 588 KB Output is correct
15 Correct 2 ms 592 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 1 ms 592 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 118 ms 21896 KB Output is correct
22 Correct 123 ms 21868 KB Output is correct
23 Correct 104 ms 21912 KB Output is correct
24 Correct 106 ms 22088 KB Output is correct
25 Correct 106 ms 21936 KB Output is correct
26 Correct 107 ms 21892 KB Output is correct
27 Correct 108 ms 21904 KB Output is correct
28 Correct 107 ms 21852 KB Output is correct
29 Correct 114 ms 21884 KB Output is correct