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답안 #1045303

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1045303 2024-08-05T20:10:51 Z Lobo Joker (BOI20_joker) C++17
14 / 100
 2000 ms 40428 KB 
#include<bits/stdc++.h>
using namespace std;
const long long inf = 1e18 + 10;
const int inf1 = 1e9 + 10;
#define int long long
#define dbl long double
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()
mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());
const int maxn = 2e5+10;
const int B = 100000000;
int n, m, q, col[maxn], colc[2*maxn], ansl[maxn];
vector<int> g[maxn], gc[2*maxn]; 
pair<int,int> edg[maxn];

bool okcol;
void dfscol(int u) {
    for(auto v : g[u]) {
        if(col[v] == -1) {
            col[v] = (col[u]^1);
            dfscol(v);
        }
        else if(col[v] != (col[u]^1)) {
            okcol = 0;
        }
    }
}
bool okcolc;
void dfscolc(int u) {
    for(auto v : gc[u]) {
        if(colc[v] == -1) {
            colc[v] = (colc[u]^1);
            dfscolc(v);
        }
        else if(colc[v] != (colc[u]^1)) {
            okcolc = 0;
        }
    }
}

void solve() {
    cin >> n >> m >> q;
    for(int i = 1; i <= m; i++) {
        int u,v;
        cin >> u >> v;
        edg[i] = mp(u,v);
    }

    int bLl = 0;
    int bLr = min(m+1,B-1);
    int bRl = 1;
    int bRr = min(m+1,B);
    while(bLl != m+1) {
        for(int i = 1; i <= n; i++) {
            g[i].clear();
            col[i] = -1;
        }
        for(int i = 1; i <= bLl-1; i++) {
            int u = edg[i].fr;
            int v = edg[i].sc;
            g[u].pb(v);
            g[v].pb(u);
        }
        for(int i = bRr+1; i <= m; i++) {
            int u = edg[i].fr;
            int v = edg[i].sc;
            g[u].pb(v);
            g[v].pb(u);
        }
        int cntcol = 0;
        okcol = 1;
        for(int i = 1; i <= n; i++) {
            if(col[i] == -1) {
                colc[cntcol] = -1;
                colc[cntcol+1] = -1;
                col[i] = cntcol;
                cntcol = cntcol+2;
                dfscol(i);
            }
        }
        if(okcol == 0) {
            if(bRr == m+1) {
                for(int i = bLl; i <= m+1; i++) {
                    ansl[i] = inf;
                }
                bLl = m+1;
                continue;
            }
            bRl = min(m+1,bRr+1);
            bRr = min(m+1,bRl+B-1);
            continue;
        }

        int L = bLl;
        int R = bRl;

        while(L <= bLr and R <= bRr) {
            vector<int> verts;
            for(int i = bLl; i <= L; i++) {
                if(i == 0 or i == m+1) continue;
                int u = edg[i].fr; verts.pb(u);
                int v = edg[i].sc; verts.pb(v);
                gc[col[u]].pb(col[v]);
                gc[col[v]].pb(col[u]);
            }
            for(int i = R; i <= bRr; i++) {
                if(i == 0 or i == m+1) continue;
                int u = edg[i].fr; verts.pb(u);
                int v = edg[i].sc; verts.pb(v);
                gc[col[u]].pb(col[v]);
                gc[col[v]].pb(col[u]);
            }
            okcolc = 1;
            for(auto i : verts) {
                if(colc[col[i]] == -1) {
                    colc[col[i]] = 0;
                    dfscolc(col[i]);
                }
            }

            if(okcolc == 1) {
                ansl[L] = R;
                L++;
            }
            else if(R == m+1) {
                ansl[L] = inf;
                L++;
            }
            else {
                R++;
            }

            for(auto i : verts) {
                colc[col[i]] = -1;
                gc[col[i]].clear();
            }
        }

        bLl = min(m+1,L);
        bLr = (min(m+1,bLl+B-1));
        bRl = min(m+1,R);
        bRr = min(m+1,bRl+B-1);
    }
    for(int i = 1; i <= q; i++) {
        int l,r;
        cin >> l >> r;
        if(ansl[l-1] <= r+1) {
            cout << "NO" << endl;
        }
        else {
            cout << "YES" << endl;
        }
    }
}

int32_t main() {
    ios::sync_with_stdio(false); cin.tie(0);

    int tt = 1;
    // cin >> tt;
    while(tt--) {
        solve();
    }

}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 20828 KB Output is correct
2 Correct 2 ms 20828 KB Output is correct
3 Correct 2 ms 20828 KB Output is correct
4 Correct 2 ms 20828 KB Output is correct
5 Correct 2 ms 20932 KB Output is correct
6 Correct 2 ms 20828 KB Output is correct
7 Correct 3 ms 20828 KB Output is correct
8 Correct 3 ms 20828 KB Output is correct
9 Correct 3 ms 20828 KB Output is correct
10 Correct 4 ms 20828 KB Output is correct
11 Correct 4 ms 20828 KB Output is correct
12 Correct 3 ms 20828 KB Output is correct
13 Correct 3 ms 20828 KB Output is correct
14 Correct 3 ms 20828 KB Output is correct
15 Correct 3 ms 20828 KB Output is correct
16 Correct 4 ms 20828 KB Output is correct
17 Correct 3 ms 20828 KB Output is correct
18 Correct 3 ms 20828 KB Output is correct
19 Correct 3 ms 20828 KB Output is correct
20 Correct 3 ms 20828 KB Output is correct
21 Correct 3 ms 20828 KB Output is correct
22 Correct 3 ms 20828 KB Output is correct
23 Correct 5 ms 20984 KB Output is correct
24 Correct 4 ms 20824 KB Output is correct
25 Correct 3 ms 20828 KB Output is correct
26 Correct 3 ms 20828 KB Output is correct
27 Correct 4 ms 20828 KB Output is correct
28 Correct 3 ms 20828 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 20828 KB Output is correct
2 Correct 2 ms 20828 KB Output is correct
3 Correct 2 ms 20828 KB Output is correct
4 Correct 2 ms 20828 KB Output is correct
5 Correct 2 ms 20932 KB Output is correct
6 Correct 2 ms 20828 KB Output is correct
7 Correct 3 ms 20828 KB Output is correct
8 Correct 3 ms 20828 KB Output is correct
9 Correct 3 ms 20828 KB Output is correct
10 Correct 4 ms 20828 KB Output is correct
11 Correct 4 ms 20828 KB Output is correct
12 Correct 3 ms 20828 KB Output is correct
13 Correct 3 ms 20828 KB Output is correct
14 Correct 3 ms 20828 KB Output is correct
15 Correct 3 ms 20828 KB Output is correct
16 Correct 4 ms 20828 KB Output is correct
17 Correct 3 ms 20828 KB Output is correct
18 Correct 3 ms 20828 KB Output is correct
19 Correct 3 ms 20828 KB Output is correct
20 Correct 3 ms 20828 KB Output is correct
21 Correct 3 ms 20828 KB Output is correct
22 Correct 3 ms 20828 KB Output is correct
23 Correct 5 ms 20984 KB Output is correct
24 Correct 4 ms 20824 KB Output is correct
25 Correct 3 ms 20828 KB Output is correct
26 Correct 3 ms 20828 KB Output is correct
27 Correct 4 ms 20828 KB Output is correct
28 Correct 3 ms 20828 KB Output is correct
29 Correct 36 ms 21124 KB Output is correct
30 Correct 98 ms 21080 KB Output is correct
31 Correct 106 ms 21080 KB Output is correct
32 Correct 101 ms 21080 KB Output is correct
33 Correct 90 ms 21084 KB Output is correct
34 Correct 103 ms 21080 KB Output is correct
35 Correct 118 ms 21152 KB Output is correct
36 Correct 94 ms 21084 KB Output is correct
37 Correct 120 ms 21164 KB Output is correct
38 Correct 146 ms 21224 KB Output is correct
39 Correct 80 ms 21084 KB Output is correct
40 Correct 90 ms 21080 KB Output is correct
41 Correct 93 ms 21080 KB Output is correct
42 Correct 102 ms 21084 KB Output is correct
43 Correct 89 ms 21140 KB Output is correct
44 Correct 99 ms 21084 KB Output is correct
45 Correct 102 ms 21084 KB Output is correct
46 Correct 112 ms 21080 KB Output is correct
47 Correct 89 ms 21084 KB Output is correct
48 Correct 94 ms 21148 KB Output is correct
49 Correct 92 ms 21084 KB Output is correct
50 Correct 101 ms 21328 KB Output is correct
51 Correct 94 ms 21084 KB Output is correct
52 Correct 100 ms 21084 KB Output is correct
53 Correct 126 ms 21084 KB Output is correct
54 Correct 131 ms 21084 KB Output is correct

Subtask #3
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 20828 KB Output is correct
2 Correct 2 ms 20828 KB Output is correct
3 Execution timed out 2045 ms 39892 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 20828 KB Output is correct
2 Correct 2 ms 20828 KB Output is correct
3 Correct 2 ms 20828 KB Output is correct
4 Correct 2 ms 20828 KB Output is correct
5 Correct 2 ms 20932 KB Output is correct
6 Correct 2 ms 20828 KB Output is correct
7 Correct 3 ms 20828 KB Output is correct
8 Correct 3 ms 20828 KB Output is correct
9 Correct 3 ms 20828 KB Output is correct
10 Correct 4 ms 20828 KB Output is correct
11 Correct 4 ms 20828 KB Output is correct
12 Correct 3 ms 20828 KB Output is correct
13 Correct 3 ms 20828 KB Output is correct
14 Correct 3 ms 20828 KB Output is correct
15 Correct 3 ms 20828 KB Output is correct
16 Correct 4 ms 20828 KB Output is correct
17 Correct 3 ms 20828 KB Output is correct
18 Correct 3 ms 20828 KB Output is correct
19 Correct 3 ms 20828 KB Output is correct
20 Correct 3 ms 20828 KB Output is correct
21 Correct 3 ms 20828 KB Output is correct
22 Correct 3 ms 20828 KB Output is correct
23 Correct 5 ms 20984 KB Output is correct
24 Correct 4 ms 20824 KB Output is correct
25 Correct 3 ms 20828 KB Output is correct
26 Correct 3 ms 20828 KB Output is correct
27 Correct 4 ms 20828 KB Output is correct
28 Correct 3 ms 20828 KB Output is correct
29 Execution timed out 2045 ms 39892 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 20828 KB Output is correct
2 Correct 2 ms 20828 KB Output is correct
3 Correct 2 ms 20828 KB Output is correct
4 Correct 2 ms 20828 KB Output is correct
5 Correct 2 ms 20932 KB Output is correct
6 Correct 2 ms 20828 KB Output is correct
7 Correct 3 ms 20828 KB Output is correct
8 Correct 3 ms 20828 KB Output is correct
9 Correct 3 ms 20828 KB Output is correct
10 Correct 4 ms 20828 KB Output is correct
11 Correct 4 ms 20828 KB Output is correct
12 Correct 3 ms 20828 KB Output is correct
13 Correct 3 ms 20828 KB Output is correct
14 Correct 3 ms 20828 KB Output is correct
15 Correct 3 ms 20828 KB Output is correct
16 Correct 4 ms 20828 KB Output is correct
17 Correct 3 ms 20828 KB Output is correct
18 Correct 3 ms 20828 KB Output is correct
19 Correct 3 ms 20828 KB Output is correct
20 Correct 3 ms 20828 KB Output is correct
21 Correct 3 ms 20828 KB Output is correct
22 Correct 3 ms 20828 KB Output is correct
23 Correct 5 ms 20984 KB Output is correct
24 Correct 4 ms 20824 KB Output is correct
25 Correct 3 ms 20828 KB Output is correct
26 Correct 3 ms 20828 KB Output is correct
27 Correct 4 ms 20828 KB Output is correct
28 Correct 3 ms 20828 KB Output is correct
29 Correct 36 ms 21124 KB Output is correct
30 Correct 98 ms 21080 KB Output is correct
31 Correct 106 ms 21080 KB Output is correct
32 Correct 101 ms 21080 KB Output is correct
33 Correct 90 ms 21084 KB Output is correct
34 Correct 103 ms 21080 KB Output is correct
35 Correct 118 ms 21152 KB Output is correct
36 Correct 94 ms 21084 KB Output is correct
37 Correct 120 ms 21164 KB Output is correct
38 Correct 146 ms 21224 KB Output is correct
39 Correct 80 ms 21084 KB Output is correct
40 Correct 90 ms 21080 KB Output is correct
41 Correct 93 ms 21080 KB Output is correct
42 Correct 102 ms 21084 KB Output is correct
43 Correct 89 ms 21140 KB Output is correct
44 Correct 99 ms 21084 KB Output is correct
45 Correct 102 ms 21084 KB Output is correct
46 Correct 112 ms 21080 KB Output is correct
47 Correct 89 ms 21084 KB Output is correct
48 Correct 94 ms 21148 KB Output is correct
49 Correct 92 ms 21084 KB Output is correct
50 Correct 101 ms 21328 KB Output is correct
51 Correct 94 ms 21084 KB Output is correct
52 Correct 100 ms 21084 KB Output is correct
53 Correct 126 ms 21084 KB Output is correct
54 Correct 131 ms 21084 KB Output is correct
55 Execution timed out 2061 ms 40428 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 20828 KB Output is correct
2 Correct 2 ms 20828 KB Output is correct
3 Correct 2 ms 20828 KB Output is correct
4 Correct 2 ms 20828 KB Output is correct
5 Correct 2 ms 20932 KB Output is correct
6 Correct 2 ms 20828 KB Output is correct
7 Correct 3 ms 20828 KB Output is correct
8 Correct 3 ms 20828 KB Output is correct
9 Correct 3 ms 20828 KB Output is correct
10 Correct 4 ms 20828 KB Output is correct
11 Correct 4 ms 20828 KB Output is correct
12 Correct 3 ms 20828 KB Output is correct
13 Correct 3 ms 20828 KB Output is correct
14 Correct 3 ms 20828 KB Output is correct
15 Correct 3 ms 20828 KB Output is correct
16 Correct 4 ms 20828 KB Output is correct
17 Correct 3 ms 20828 KB Output is correct
18 Correct 3 ms 20828 KB Output is correct
19 Correct 3 ms 20828 KB Output is correct
20 Correct 3 ms 20828 KB Output is correct
21 Correct 3 ms 20828 KB Output is correct
22 Correct 3 ms 20828 KB Output is correct
23 Correct 5 ms 20984 KB Output is correct
24 Correct 4 ms 20824 KB Output is correct
25 Correct 3 ms 20828 KB Output is correct
26 Correct 3 ms 20828 KB Output is correct
27 Correct 4 ms 20828 KB Output is correct
28 Correct 3 ms 20828 KB Output is correct
29 Correct 36 ms 21124 KB Output is correct
30 Correct 98 ms 21080 KB Output is correct
31 Correct 106 ms 21080 KB Output is correct
32 Correct 101 ms 21080 KB Output is correct
33 Correct 90 ms 21084 KB Output is correct
34 Correct 103 ms 21080 KB Output is correct
35 Correct 118 ms 21152 KB Output is correct
36 Correct 94 ms 21084 KB Output is correct
37 Correct 120 ms 21164 KB Output is correct
38 Correct 146 ms 21224 KB Output is correct
39 Correct 80 ms 21084 KB Output is correct
40 Correct 90 ms 21080 KB Output is correct
41 Correct 93 ms 21080 KB Output is correct
42 Correct 102 ms 21084 KB Output is correct
43 Correct 89 ms 21140 KB Output is correct
44 Correct 99 ms 21084 KB Output is correct
45 Correct 102 ms 21084 KB Output is correct
46 Correct 112 ms 21080 KB Output is correct
47 Correct 89 ms 21084 KB Output is correct
48 Correct 94 ms 21148 KB Output is correct
49 Correct 92 ms 21084 KB Output is correct
50 Correct 101 ms 21328 KB Output is correct
51 Correct 94 ms 21084 KB Output is correct
52 Correct 100 ms 21084 KB Output is correct
53 Correct 126 ms 21084 KB Output is correct
54 Correct 131 ms 21084 KB Output is correct
55 Execution timed out 2045 ms 39892 KB Time limit exceeded
56 Halted 0 ms 0 KB -