195422025-12-14 12:07:48GergoszaboFagyasztócpp17Wrong answer 0/753ms664 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.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";
    }
    return 0;
}
SubtaskSumTestVerdictTimeMemory
subtask10/0
1Accepted1ms500 KiB
subtask20/10
2Accepted2ms316 KiB
3Accepted1ms316 KiB
4Wrong answer1ms512 KiB
5Partially correct2ms316 KiB
6Accepted1ms564 KiB
7Accepted1ms316 KiB
8Partially correct1ms316 KiB
9Accepted1ms508 KiB
10Accepted1ms316 KiB
11Accepted1ms380 KiB
subtask30/20
12Wrong answer1ms316 KiB
13Wrong answer1ms316 KiB
14Wrong answer1ms316 KiB
15Accepted1ms392 KiB
16Accepted1ms368 KiB
17Wrong answer1ms316 KiB
18Wrong answer1ms316 KiB
19Wrong answer1ms336 KiB
20Wrong answer2ms500 KiB
21Wrong answer2ms404 KiB
22Wrong answer1ms316 KiB
23Wrong answer1ms316 KiB
24Wrong answer2ms652 KiB
25Wrong answer2ms316 KiB
26Wrong answer1ms316 KiB
27Wrong answer3ms316 KiB
28Wrong answer2ms316 KiB
29Wrong answer1ms316 KiB
30Wrong answer1ms316 KiB
31Wrong answer1ms316 KiB
subtask40/15
32Accepted1ms316 KiB
33Accepted1ms508 KiB
34Accepted1ms316 KiB
35Wrong answer1ms316 KiB
36Wrong answer1ms316 KiB
37Wrong answer1ms316 KiB
38Wrong answer1ms316 KiB
39Accepted1ms316 KiB
40Wrong answer1ms316 KiB
41Wrong answer2ms508 KiB
42Wrong answer1ms408 KiB
43Wrong answer2ms316 KiB
44Wrong answer1ms316 KiB
45Wrong answer1ms316 KiB
46Wrong answer2ms316 KiB
subtask50/15
47Wrong answer2ms316 KiB
48Wrong answer1ms500 KiB
49Wrong answer1ms316 KiB
50Wrong answer1ms564 KiB
51Wrong answer1ms316 KiB
52Wrong answer1ms316 KiB
53Wrong answer1ms316 KiB
54Wrong answer1ms316 KiB
55Accepted1ms316 KiB
56Wrong answer1ms316 KiB
57Wrong answer1ms316 KiB
58Wrong answer1ms316 KiB
59Wrong answer1ms316 KiB
60Accepted1ms316 KiB
61Wrong answer1ms316 KiB
subtask60/15
62Wrong answer1ms664 KiB
63Wrong answer1ms316 KiB
64Wrong answer2ms420 KiB
65Wrong answer2ms316 KiB
66Wrong answer2ms508 KiB
67Wrong answer2ms512 KiB
68Wrong answer2ms316 KiB
69Wrong answer2ms316 KiB
70Wrong answer3ms564 KiB
71Wrong answer2ms316 KiB
72Wrong answer1ms316 KiB
73Wrong answer1ms316 KiB
74Wrong answer1ms316 KiB
75Wrong answer1ms316 KiB
76Wrong answer1ms316 KiB