233532026-01-20 13:12:19mihalykocsisFagyasztócpp17Wrong answer 0/758ms556 KiB
// Source: https://usaco.guide/general/io

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

int main() {
    ios_base::sync_with_stdio(false);cin.tie(NULL);
	int n;cin>>n;int ans = 1;
    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 <kaja.size();i++){
        for(int j =0;j<kaja.size();j++){
            if(kaja[i].first >= ans&&kaja[j].first>=ans &&kaja[i].second +kaja[j].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
1Wrong answer1ms316 KiB
subtask20/10
2Wrong answer1ms316 KiB
3Wrong answer1ms500 KiB
4Wrong answer1ms316 KiB
5Wrong answer1ms508 KiB
6Wrong answer1ms316 KiB
7Wrong answer1ms316 KiB
8Wrong answer1ms316 KiB
9Wrong answer1ms316 KiB
10Wrong answer1ms360 KiB
11Wrong answer1ms316 KiB
subtask30/20
12Wrong answer1ms316 KiB
13Wrong answer1ms316 KiB
14Wrong answer1ms316 KiB
15Wrong answer1ms316 KiB
16Wrong answer1ms316 KiB
17Wrong answer1ms316 KiB
18Wrong answer1ms316 KiB
19Wrong answer1ms316 KiB
20Wrong answer1ms316 KiB
21Wrong answer2ms316 KiB
22Wrong answer1ms316 KiB
23Wrong answer4ms444 KiB
24Wrong answer4ms440 KiB
25Wrong answer3ms316 KiB
26Wrong answer1ms316 KiB
27Wrong answer7ms456 KiB
28Wrong answer8ms332 KiB
29Wrong answer1ms500 KiB
30Wrong answer3ms508 KiB
31Wrong answer4ms452 KiB
subtask40/15
32Wrong answer1ms316 KiB
33Wrong answer1ms316 KiB
34Wrong answer1ms316 KiB
35Wrong answer1ms316 KiB
36Wrong answer1ms432 KiB
37Wrong answer2ms316 KiB
38Wrong answer1ms316 KiB
39Wrong answer1ms316 KiB
40Wrong answer1ms316 KiB
41Wrong answer2ms316 KiB
42Wrong answer1ms316 KiB
43Wrong answer4ms440 KiB
44Wrong answer1ms512 KiB
45Wrong answer2ms500 KiB
46Wrong answer4ms316 KiB
subtask50/15
47Wrong answer1ms500 KiB
48Wrong answer1ms316 KiB
49Wrong answer1ms424 KiB
50Wrong answer1ms556 KiB
51Wrong answer1ms316 KiB
52Wrong answer1ms316 KiB
53Wrong answer1ms316 KiB
54Wrong answer2ms316 KiB
55Wrong answer1ms316 KiB
56Wrong answer1ms316 KiB
57Wrong answer1ms316 KiB
58Wrong answer1ms316 KiB
59Wrong answer1ms384 KiB
60Wrong answer1ms508 KiB
61Wrong answer1ms316 KiB
subtask60/15
62Wrong answer1ms316 KiB
63Wrong answer1ms432 KiB
64Wrong answer3ms424 KiB
65Wrong answer4ms456 KiB
66Wrong answer6ms316 KiB
67Wrong answer1ms316 KiB
68Wrong answer2ms316 KiB
69Wrong answer2ms316 KiB
70Wrong answer1ms316 KiB
71Wrong answer4ms388 KiB
72Wrong answer1ms500 KiB
73Wrong answer2ms316 KiB
74Wrong answer3ms316 KiB
75Wrong answer1ms316 KiB
76Wrong answer1ms316 KiB