233272026-01-19 14:53:57mihalykocsisFagyasztócpp17Wrong answer 0/758ms576 KiB
// Source: https://usaco.guide/general/io

#include <bits/stdc++.h>
using namespace std;

int main() {
	int n;cin>>n;int ans = 0;
    vector<pair<int,int>>kaja;
    vector<int>ansok;
    vector<bool>volt(n);
    for(int i = 0;i<n;i++){
        int x,y;cin>>x>>y;
        if(y >= 4){
            kaja.push_back(make_pair(x,y));
        }
    }
    for(int i = 0;i <n;i++){
        for(int j =0;j<n;j++){
            if(kaja[i].first > ans&&kaja[i+1].first>ans &&kaja[i].second +kaja[i+1].second>8 &&j!=i&&!volt[i]&&!volt[j]){
                ans++;ansok.push_back(i+1);ansok.push_back(j+1);
                volt[i]=true;volt[j]=true;
            }
        }
    }
    cout << ans<<"\n";
    for(int i = 0;i < ansok.size();i+=2){
        cout << ansok[i] << " "<<ansok[i+1]<<"\n";
    }
}
SubtaskSumTestVerdictTimeMemory
subtask10/0
1Accepted1ms316 KiB
subtask20/10
2Wrong answer1ms316 KiB
3Wrong answer1ms316 KiB
4Wrong answer1ms316 KiB
5Partially correct1ms316 KiB
6Accepted1ms384 KiB
7Partially correct1ms316 KiB
8Accepted1ms316 KiB
9Partially correct1ms316 KiB
10Accepted1ms508 KiB
11Accepted1ms500 KiB
subtask30/20
12Accepted1ms316 KiB
13Accepted1ms316 KiB
14Wrong answer1ms316 KiB
15Accepted1ms372 KiB
16Accepted1ms316 KiB
17Wrong answer1ms316 KiB
18Wrong answer1ms508 KiB
19Wrong answer1ms316 KiB
20Wrong answer1ms316 KiB
21Wrong answer2ms316 KiB
22Wrong answer1ms316 KiB
23Wrong answer4ms316 KiB
24Wrong answer4ms420 KiB
25Wrong answer2ms316 KiB
26Wrong answer1ms316 KiB
27Wrong answer4ms316 KiB
28Wrong answer4ms316 KiB
29Wrong answer1ms316 KiB
30Wrong answer3ms500 KiB
31Wrong answer3ms316 KiB
subtask40/15
32Partially correct1ms316 KiB
33Accepted1ms316 KiB
34Wrong answer1ms316 KiB
35Wrong answer1ms316 KiB
36Wrong answer2ms316 KiB
37Wrong answer1ms316 KiB
38Wrong answer1ms316 KiB
39Wrong answer1ms316 KiB
40Wrong answer1ms508 KiB
41Wrong answer3ms316 KiB
42Wrong answer2ms316 KiB
43Wrong answer4ms528 KiB
44Wrong answer1ms500 KiB
45Wrong answer2ms316 KiB
46Wrong answer8ms420 KiB
subtask50/15
47Wrong answer1ms508 KiB
48Wrong answer1ms316 KiB
49Wrong answer1ms316 KiB
50Wrong answer1ms316 KiB
51Wrong answer1ms316 KiB
52Wrong answer1ms316 KiB
53Wrong answer1ms316 KiB
54Wrong answer1ms316 KiB
55Partially correct1ms316 KiB
56Wrong answer1ms500 KiB
57Wrong answer1ms316 KiB
58Wrong answer1ms316 KiB
59Wrong answer1ms500 KiB
60Wrong answer1ms316 KiB
61Wrong answer1ms316 KiB
subtask60/15
62Wrong answer2ms316 KiB
63Wrong answer2ms408 KiB
64Wrong answer6ms408 KiB
65Wrong answer4ms316 KiB
66Wrong answer7ms424 KiB
67Wrong answer1ms316 KiB
68Wrong answer2ms364 KiB
69Wrong answer1ms508 KiB
70Wrong answer2ms316 KiB
71Wrong answer3ms540 KiB
72Wrong answer1ms316 KiB
73Wrong answer3ms576 KiB
74Wrong answer2ms316 KiB
75Wrong answer2ms316 KiB
76Wrong answer1ms560 KiB