195432025-12-14 12:13:57GergoszaboFagyasztócpp17Wrong answer 15/752ms576 KiB
#include <iostream>
#include <bits/stdc++.h>
using namespace std;

struct adag{
    int d, m, ind;
};

bool compare(adag &a, adag &b){
    return a.d < b.d;
}

int main()
{
    int n; cin >> n;
    vector<adag> v(n+1);
    for (int i = 1; i <= n; i++){
        cin >> v[i].d >> v[i].m;
        v[i].ind = i;
    }
    vector<adag> g;
    for (int i = 1; i <= n; i++){
        if (v[i].m >= 4) g.push_back(v[i]);
    }
    sort(g.begin(), g.end(), compare);
    vector<adag> e4, e5;
    for (int i = 0; i < g.size(); i++){
        if (g[i].m == 4 && g[i].d > e4.size()) e4.push_back(g[i]);
        else if (g[i].d > e5.size()) e5.push_back(g[i]);
    }
    while(e5.size() > e4.size()){
        e4.push_back(e5[e5.size()-1]);
        e5.pop_back();
    }
//    int k = min(e4.size(), e5.size()) + (max(int(e5.size() - e4.size()), 0))/2;
//    cout << k << "\n";
//    for (int i = 0; i < min(e4.size(), e5.size()); i++){
//        cout << e4[i].ind << " " << e5[i].ind << "\n";
//    }
//    for (int i = min(e4.size(), e5.size())+1; i <= k; i += 2){
//        cout << e5[i-1].ind << " " << e5[i].ind << "\n";
//    }
    cout << e5.size() << "\n";
    for (int i = 0; i < e5.size(); i++){
        cout << e5[i].ind << " " << e4[i].ind << "\n";
    }
    return 0;
}
SubtaskSumTestVerdictTimeMemory
subtask10/0
1Accepted1ms316 KiB
subtask20/10
2Accepted1ms512 KiB
3Accepted1ms316 KiB
4Wrong answer1ms560 KiB
5Partially correct1ms316 KiB
6Accepted1ms316 KiB
7Accepted1ms316 KiB
8Partially correct1ms316 KiB
9Accepted1ms316 KiB
10Accepted1ms316 KiB
11Accepted1ms316 KiB
subtask30/20
12Accepted1ms316 KiB
13Accepted1ms508 KiB
14Accepted1ms316 KiB
15Accepted1ms316 KiB
16Accepted1ms316 KiB
17Wrong answer1ms316 KiB
18Wrong answer1ms316 KiB
19Wrong answer1ms316 KiB
20Wrong answer1ms384 KiB
21Wrong answer1ms316 KiB
22Wrong answer1ms316 KiB
23Wrong answer1ms316 KiB
24Wrong answer2ms316 KiB
25Wrong answer1ms316 KiB
26Wrong answer1ms316 KiB
27Wrong answer2ms316 KiB
28Wrong answer2ms316 KiB
29Wrong answer2ms316 KiB
30Wrong answer2ms316 KiB
31Wrong answer2ms512 KiB
subtask415/15
32Accepted1ms316 KiB
33Accepted1ms316 KiB
34Accepted1ms316 KiB
35Accepted1ms316 KiB
36Accepted2ms576 KiB
37Accepted2ms316 KiB
38Accepted2ms316 KiB
39Accepted2ms316 KiB
40Accepted1ms316 KiB
41Accepted1ms316 KiB
42Accepted1ms316 KiB
43Accepted1ms316 KiB
44Accepted1ms388 KiB
45Accepted2ms316 KiB
46Accepted2ms316 KiB
subtask50/15
47Wrong answer1ms316 KiB
48Wrong answer1ms316 KiB
49Wrong answer1ms316 KiB
50Accepted1ms316 KiB
51Accepted1ms316 KiB
52Wrong answer1ms316 KiB
53Wrong answer1ms316 KiB
54Accepted1ms316 KiB
55Accepted1ms316 KiB
56Accepted2ms316 KiB
57Wrong answer2ms512 KiB
58Wrong answer1ms316 KiB
59Accepted1ms512 KiB
60Accepted1ms316 KiB
61Accepted1ms316 KiB
subtask60/15
62Wrong answer1ms316 KiB
63Wrong answer1ms508 KiB
64Wrong answer2ms508 KiB
65Accepted2ms316 KiB
66Accepted2ms444 KiB
67Wrong answer1ms316 KiB
68Wrong answer1ms396 KiB
69Accepted1ms412 KiB
70Wrong answer1ms492 KiB
71Wrong answer2ms508 KiB
72Accepted1ms512 KiB
73Wrong answer1ms508 KiB
74Wrong answer1ms500 KiB
75Wrong answer1ms316 KiB
76Wrong answer1ms316 KiB