답안 #925650

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
925650	2024-02-12T06:56:50 Z	vjudge1	Joker (BOI20_joker)	C++17	14 / 100	1575 ms	1208 KB

Joker

// #pragma GCC target ("avx2")
// #pragma GCC optimization ("O3")
// #pragma GCC optimization ("unroll-loops")

#include <bits/stdc++.h>

#define int long long
#define ff first
#define ss second
#define pb push_back
#define yes cout<<"YES\n"
#define no cout<<"NO\n"
#define no1 cout<<"-1\n"

using namespace std;

const int N = 3000;
const int M = 2e5+100;
const int INF = 1e18;
const int mod = 998244353;
  
// int binpow (int a, int n) {
// 	if (n == 0)
// 		return 1;
// 	if (n % 2 == 1)
// 		return (binpow (a, n-1) * a)%mod;
// 	else {
// 		int b = binpow (a, n/2) % mod;
// 		return (b * b)%mod;
// 	}
// }

int n,m,q;
vector<int> g[N];
vector<pair<int,int>> edges;
int d[N];
bool was[N];
map<pair<int,int>,bool> del;
bool ok;

void dfs(int v, int p = 0){
    was[v] = 1;
    d[v] = d[p]+1;
    for(auto to:g[v]){
        if(del[{to,v}]) continue;
        if(!was[to]) dfs(to,v);
        if(was[to] && (d[v]-d[to])%2 == 0) ok = 1;
    }
}

void solve(){
    cin>>n>>m>>q;
    for(int i = 1;i<=m;i++){
        int u,v;
        cin>>u>>v;
        g[u].pb(v);
        g[v].pb(u);
        edges.pb({u,v});
    }
    while(q--){
        int l,r;
        cin>>l>>r;
        del.clear();
        for(int i = 1;i<=n;i++){
            was[i] = 0;
            d[i] = 0;
        }
        ok = 0;
        for(int i = l-1;i<r;i++){
            del[{edges[i].ff,edges[i].ss}] = 1;
            del[{edges[i].ss,edges[i].ff}] = 1;
        }
        for(int i = 1;i<=n;i++){
            if(!was[i]){
                dfs(i);
            }
        }
        if(ok) yes;
        else no;
    }
}

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(nullptr);
    // cout.tie(nullptr);
    int t = 1; 
    // cin>>t;
    //   cout<<"";
    for(int i = 1;i<=t;i++){
        solve();
        // cout<<'\n';
    }
}

Subtask #1

6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	5 ms	344 KB	Output is correct
8	Correct	11 ms	348 KB	Output is correct
9	Correct	12 ms	576 KB	Output is correct
10	Correct	12 ms	348 KB	Output is correct
11	Correct	12 ms	348 KB	Output is correct
12	Correct	12 ms	348 KB	Output is correct
13	Correct	13 ms	580 KB	Output is correct
14	Correct	10 ms	348 KB	Output is correct
15	Correct	11 ms	576 KB	Output is correct
16	Correct	12 ms	348 KB	Output is correct
17	Correct	12 ms	348 KB	Output is correct
18	Correct	13 ms	348 KB	Output is correct
19	Correct	12 ms	576 KB	Output is correct
20	Correct	10 ms	348 KB	Output is correct
21	Correct	11 ms	348 KB	Output is correct
22	Correct	11 ms	584 KB	Output is correct
23	Correct	12 ms	572 KB	Output is correct
24	Correct	12 ms	348 KB	Output is correct
25	Correct	12 ms	344 KB	Output is correct
26	Correct	13 ms	580 KB	Output is correct
27	Correct	12 ms	348 KB	Output is correct
28	Correct	12 ms	348 KB	Output is correct

Subtask #2

8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	5 ms	344 KB	Output is correct
8	Correct	11 ms	348 KB	Output is correct
9	Correct	12 ms	576 KB	Output is correct
10	Correct	12 ms	348 KB	Output is correct
11	Correct	12 ms	348 KB	Output is correct
12	Correct	12 ms	348 KB	Output is correct
13	Correct	13 ms	580 KB	Output is correct
14	Correct	10 ms	348 KB	Output is correct
15	Correct	11 ms	576 KB	Output is correct
16	Correct	12 ms	348 KB	Output is correct
17	Correct	12 ms	348 KB	Output is correct
18	Correct	13 ms	348 KB	Output is correct
19	Correct	12 ms	576 KB	Output is correct
20	Correct	10 ms	348 KB	Output is correct
21	Correct	11 ms	348 KB	Output is correct
22	Correct	11 ms	584 KB	Output is correct
23	Correct	12 ms	572 KB	Output is correct
24	Correct	12 ms	348 KB	Output is correct
25	Correct	12 ms	344 KB	Output is correct
26	Correct	13 ms	580 KB	Output is correct
27	Correct	12 ms	348 KB	Output is correct
28	Correct	12 ms	348 KB	Output is correct
29	Correct	593 ms	708 KB	Output is correct
30	Correct	1338 ms	920 KB	Output is correct
31	Correct	1522 ms	956 KB	Output is correct
32	Correct	1550 ms	1104 KB	Output is correct
33	Correct	1536 ms	1112 KB	Output is correct
34	Correct	1510 ms	960 KB	Output is correct
35	Correct	1482 ms	1208 KB	Output is correct
36	Correct	1420 ms	1108 KB	Output is correct
37	Correct	1365 ms	960 KB	Output is correct
38	Correct	1246 ms	924 KB	Output is correct
39	Correct	1497 ms	944 KB	Output is correct
40	Correct	1548 ms	948 KB	Output is correct
41	Correct	1558 ms	944 KB	Output is correct
42	Correct	1546 ms	948 KB	Output is correct
43	Correct	1352 ms	1104 KB	Output is correct
44	Correct	1330 ms	940 KB	Output is correct
45	Correct	1340 ms	948 KB	Output is correct
46	Correct	1348 ms	964 KB	Output is correct
47	Correct	1531 ms	920 KB	Output is correct
48	Correct	1539 ms	932 KB	Output is correct
49	Correct	1499 ms	940 KB	Output is correct
50	Correct	1575 ms	1112 KB	Output is correct
51	Correct	1569 ms	1108 KB	Output is correct
52	Correct	1541 ms	940 KB	Output is correct
53	Correct	1574 ms	860 KB	Output is correct
54	Correct	1495 ms	1108 KB	Output is correct

Subtask #3

0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Runtime error	1 ms	604 KB	Execution killed with signal 11
4	Halted	0 ms	0 KB	-

Subtask #4

0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	5 ms	344 KB	Output is correct
8	Correct	11 ms	348 KB	Output is correct
9	Correct	12 ms	576 KB	Output is correct
10	Correct	12 ms	348 KB	Output is correct
11	Correct	12 ms	348 KB	Output is correct
12	Correct	12 ms	348 KB	Output is correct
13	Correct	13 ms	580 KB	Output is correct
14	Correct	10 ms	348 KB	Output is correct
15	Correct	11 ms	576 KB	Output is correct
16	Correct	12 ms	348 KB	Output is correct
17	Correct	12 ms	348 KB	Output is correct
18	Correct	13 ms	348 KB	Output is correct
19	Correct	12 ms	576 KB	Output is correct
20	Correct	10 ms	348 KB	Output is correct
21	Correct	11 ms	348 KB	Output is correct
22	Correct	11 ms	584 KB	Output is correct
23	Correct	12 ms	572 KB	Output is correct
24	Correct	12 ms	348 KB	Output is correct
25	Correct	12 ms	344 KB	Output is correct
26	Correct	13 ms	580 KB	Output is correct
27	Correct	12 ms	348 KB	Output is correct
28	Correct	12 ms	348 KB	Output is correct
29	Runtime error	1 ms	604 KB	Execution killed with signal 11
30	Halted	0 ms	0 KB	-

Subtask #5

0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	5 ms	344 KB	Output is correct
8	Correct	11 ms	348 KB	Output is correct
9	Correct	12 ms	576 KB	Output is correct
10	Correct	12 ms	348 KB	Output is correct
11	Correct	12 ms	348 KB	Output is correct
12	Correct	12 ms	348 KB	Output is correct
13	Correct	13 ms	580 KB	Output is correct
14	Correct	10 ms	348 KB	Output is correct
15	Correct	11 ms	576 KB	Output is correct
16	Correct	12 ms	348 KB	Output is correct
17	Correct	12 ms	348 KB	Output is correct
18	Correct	13 ms	348 KB	Output is correct
19	Correct	12 ms	576 KB	Output is correct
20	Correct	10 ms	348 KB	Output is correct
21	Correct	11 ms	348 KB	Output is correct
22	Correct	11 ms	584 KB	Output is correct
23	Correct	12 ms	572 KB	Output is correct
24	Correct	12 ms	348 KB	Output is correct
25	Correct	12 ms	344 KB	Output is correct
26	Correct	13 ms	580 KB	Output is correct
27	Correct	12 ms	348 KB	Output is correct
28	Correct	12 ms	348 KB	Output is correct
29	Correct	593 ms	708 KB	Output is correct
30	Correct	1338 ms	920 KB	Output is correct
31	Correct	1522 ms	956 KB	Output is correct
32	Correct	1550 ms	1104 KB	Output is correct
33	Correct	1536 ms	1112 KB	Output is correct
34	Correct	1510 ms	960 KB	Output is correct
35	Correct	1482 ms	1208 KB	Output is correct
36	Correct	1420 ms	1108 KB	Output is correct
37	Correct	1365 ms	960 KB	Output is correct
38	Correct	1246 ms	924 KB	Output is correct
39	Correct	1497 ms	944 KB	Output is correct
40	Correct	1548 ms	948 KB	Output is correct
41	Correct	1558 ms	944 KB	Output is correct
42	Correct	1546 ms	948 KB	Output is correct
43	Correct	1352 ms	1104 KB	Output is correct
44	Correct	1330 ms	940 KB	Output is correct
45	Correct	1340 ms	948 KB	Output is correct
46	Correct	1348 ms	964 KB	Output is correct
47	Correct	1531 ms	920 KB	Output is correct
48	Correct	1539 ms	932 KB	Output is correct
49	Correct	1499 ms	940 KB	Output is correct
50	Correct	1575 ms	1112 KB	Output is correct
51	Correct	1569 ms	1108 KB	Output is correct
52	Correct	1541 ms	940 KB	Output is correct
53	Correct	1574 ms	860 KB	Output is correct
54	Correct	1495 ms	1108 KB	Output is correct
55	Runtime error	1 ms	604 KB	Execution killed with signal 11
56	Halted	0 ms	0 KB	-

Subtask #6

0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	5 ms	344 KB	Output is correct
8	Correct	11 ms	348 KB	Output is correct
9	Correct	12 ms	576 KB	Output is correct
10	Correct	12 ms	348 KB	Output is correct
11	Correct	12 ms	348 KB	Output is correct
12	Correct	12 ms	348 KB	Output is correct
13	Correct	13 ms	580 KB	Output is correct
14	Correct	10 ms	348 KB	Output is correct
15	Correct	11 ms	576 KB	Output is correct
16	Correct	12 ms	348 KB	Output is correct
17	Correct	12 ms	348 KB	Output is correct
18	Correct	13 ms	348 KB	Output is correct
19	Correct	12 ms	576 KB	Output is correct
20	Correct	10 ms	348 KB	Output is correct
21	Correct	11 ms	348 KB	Output is correct
22	Correct	11 ms	584 KB	Output is correct
23	Correct	12 ms	572 KB	Output is correct
24	Correct	12 ms	348 KB	Output is correct
25	Correct	12 ms	344 KB	Output is correct
26	Correct	13 ms	580 KB	Output is correct
27	Correct	12 ms	348 KB	Output is correct
28	Correct	12 ms	348 KB	Output is correct
29	Correct	593 ms	708 KB	Output is correct
30	Correct	1338 ms	920 KB	Output is correct
31	Correct	1522 ms	956 KB	Output is correct
32	Correct	1550 ms	1104 KB	Output is correct
33	Correct	1536 ms	1112 KB	Output is correct
34	Correct	1510 ms	960 KB	Output is correct
35	Correct	1482 ms	1208 KB	Output is correct
36	Correct	1420 ms	1108 KB	Output is correct
37	Correct	1365 ms	960 KB	Output is correct
38	Correct	1246 ms	924 KB	Output is correct
39	Correct	1497 ms	944 KB	Output is correct
40	Correct	1548 ms	948 KB	Output is correct
41	Correct	1558 ms	944 KB	Output is correct
42	Correct	1546 ms	948 KB	Output is correct
43	Correct	1352 ms	1104 KB	Output is correct
44	Correct	1330 ms	940 KB	Output is correct
45	Correct	1340 ms	948 KB	Output is correct
46	Correct	1348 ms	964 KB	Output is correct
47	Correct	1531 ms	920 KB	Output is correct
48	Correct	1539 ms	932 KB	Output is correct
49	Correct	1499 ms	940 KB	Output is correct
50	Correct	1575 ms	1112 KB	Output is correct
51	Correct	1569 ms	1108 KB	Output is correct
52	Correct	1541 ms	940 KB	Output is correct
53	Correct	1574 ms	860 KB	Output is correct
54	Correct	1495 ms	1108 KB	Output is correct
55	Runtime error	1 ms	604 KB	Execution killed with signal 11
56	Halted	0 ms	0 KB	-