oj.uz

Submission #168594

# Submission time Handle Problem Language Result Execution time Memory
168594 2019-12-14T04:48:43 Z tri Parachute rings (IOI12_rings) C++14
100 / 100
 1255 ms 98880 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;

typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;

#define pb push_back
#define f first
#define s second

const int MAXN = 1e6 + 10;

struct Graph {
    bool pos = false;
    int crit;
    int opp[MAXN];
};

Graph cand[4];

vi aL[MAXN];

int opp[MAXN], sz[MAXN];
int nLoop = 0;
int numCrit = 0;

int N;
int phase = 2;

namespace debug {
    const int DEBUG = true;

    template<class T1, class T2>
    void pr(const pair<T1, T2> &x);

    template<class T, size_t SZ>
    void pr(const array<T, SZ> &x);

    template<class T>
    void pr(const vector<T> &x);

    template<class T>
    void pr(const set<T> &x);

    template<class T1, class T2>
    void pr(const map<T1, T2> &x);

    template<class T>
    void pr(const T &x) { if (DEBUG) cout << x; }

    template<class T, class... Ts>
    void pr(const T &first, const Ts &... rest) { pr(first), pr(rest...); }

    template<class T1, class T2>
    void pr(const pair<T1, T2> &x) { pr("{", x.f, ", ", x.s, "}"); }

    template<class T>
    void prIn(const T &x) {
        pr("{");
        bool fst = 1;
        for (auto &a : x) {
            pr(fst ? "" : ", ", a), fst = 0;
        }
        pr("}");
    }

    template<class T, size_t SZ>
    void pr(const array<T, SZ> &x) { prIn(x); }

    template<class T>
    void pr(const vector<T> &x) { prIn(x); }

    template<class T>
    void pr(const set<T> &x) { prIn(x); }

    template<class T1, class T2>
    void pr(const map<T1, T2> &x) { prIn(x); }

    void ps() { pr("\n"), cout << flush; }

    template<class Arg, class... Args>
    void ps(const Arg &first, const Args &... rest) {
        pr(first, " ");
        ps(rest...);
    }
}
using namespace debug;


void Init(int iN) {
    N = iN;
    for (int i = 0; i < N; i++) {
        opp[i] = i;
        sz[i] = 1;
    }
    numCrit = N;
}

vector<pi> edges;

inline void addEdge(Graph &cG, int u, int v) {
//    ps("edge:", u, v);
    if (u == cG.crit || v == cG.crit) {
        return;
    }

    if (cG.opp[u] == -1 || cG.opp[v] == -1 || cG.opp[u] == v) {
//        ps(u, v);
//        ps(cG.opp[u], cG.opp[v]);
        cG.pos = false;
        return;
    }

    int e1 = cG.opp[u];
    int e2 = cG.opp[v];

    cG.opp[u] = cG.opp[v] = -1;
    cG.opp[e1] = e2;
    cG.opp[e2] = e1;
}

void build(Graph &cG) {
//    ps("crit:", cG.crit);
    cG.pos = true;
    for (int i = 0; i < N; i++) {
        cG.opp[i] = i;
    }

    for (pi cE : edges) {
        addEdge(cG, cE.f, cE.s);
        if (!cG.pos) {
            return;
        }
    }
//    ps("fin build");
}

void Link(int u, int v) {
    edges.pb({u, v});

    if (phase == 2) {
        aL[u].pb(v);
        aL[v].pb(u);

        if (aL[u].size() == 3) {
            cand[0].crit = u;
            build(cand[0]);

            for (int i = 0; i < aL[u].size(); i++) {
                cand[i + 1].crit = aL[u][i];
                build(cand[i + 1]);
            }
            phase = 3;
            return;
        } else if (aL[v].size() == 3) {
            cand[0].crit = v;
            build(cand[0]);

            for (int i = 0; i < aL[v].size(); i++) {
                cand[i + 1].crit = aL[v][i];
                build(cand[i + 1]);
            }
            phase = 3;
            return;
        }

        assert(opp[u] != -1 && opp[v] != -1);

        if (opp[u] == v) {
            nLoop++;
            if (nLoop == 1) {
                numCrit = sz[u];
            } else {
                numCrit = 0;
            }
            opp[u] = opp[v] = -1;
            return;
        }

        int e1 = opp[u];
        int e2 = opp[v];
        int nS = sz[u] + sz[v];

        opp[u] = opp[v] = -1;
        opp[e1] = e2;
        opp[e2] = e1;
        sz[e1] = nS;
        sz[e2] = nS;
    } else {
        for (Graph &cG : cand) {
            if (!cG.pos) {
                continue;
            }
            addEdge(cG, u, v);
        }
    }
}

int CountCritical() {
    if (phase == 2) {
        return numCrit;
    } else {
        int ans = 0;
        for (Graph &cG : cand) {
            if (cG.pos) {
                ans++;
            }
        }
        return ans;
    }
}

Compilation message

rings.cpp: In function 'void Link(int, int)':
rings.cpp:156:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int i = 0; i < aL[u].size(); i++) {
                             ~~^~~~~~~~~~~~~~
rings.cpp:166:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int i = 0; i < aL[v].size(); i++) {
                             ~~^~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23928 KB Output is correct
2 Correct 24 ms 24184 KB Output is correct
3 Correct 25 ms 24184 KB Output is correct
4 Correct 23 ms 23928 KB Output is correct
5 Correct 25 ms 24056 KB Output is correct
6 Correct 25 ms 24184 KB Output is correct
7 Correct 24 ms 23972 KB Output is correct
8 Correct 25 ms 24056 KB Output is correct
9 Correct 25 ms 24312 KB Output is correct
10 Correct 26 ms 24184 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 456 ms 48308 KB Output is correct
2 Correct 563 ms 64884 KB Output is correct
3 Correct 334 ms 56028 KB Output is correct
4 Correct 1197 ms 70864 KB Output is correct
5 Correct 1239 ms 84304 KB Output is correct
6 Correct 1219 ms 82716 KB Output is correct
7 Correct 333 ms 67300 KB Output is correct
8 Correct 1074 ms 92148 KB Output is correct
9 Correct 1255 ms 98880 KB Output is correct
10 Correct 814 ms 81252 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23928 KB Output is correct
2 Correct 24 ms 24184 KB Output is correct
3 Correct 25 ms 24184 KB Output is correct
4 Correct 23 ms 23928 KB Output is correct
5 Correct 25 ms 24056 KB Output is correct
6 Correct 25 ms 24184 KB Output is correct
7 Correct 24 ms 23972 KB Output is correct
8 Correct 25 ms 24056 KB Output is correct
9 Correct 25 ms 24312 KB Output is correct
10 Correct 26 ms 24184 KB Output is correct
11 Correct 25 ms 24184 KB Output is correct
12 Correct 29 ms 24604 KB Output is correct
13 Correct 28 ms 24568 KB Output is correct
14 Correct 26 ms 24312 KB Output is correct
15 Correct 26 ms 24568 KB Output is correct
16 Correct 28 ms 24448 KB Output is correct
17 Correct 27 ms 24472 KB Output is correct
18 Correct 27 ms 24668 KB Output is correct
19 Correct 28 ms 24568 KB Output is correct
20 Correct 28 ms 24568 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23928 KB Output is correct
2 Correct 24 ms 24184 KB Output is correct
3 Correct 25 ms 24184 KB Output is correct
4 Correct 23 ms 23928 KB Output is correct
5 Correct 25 ms 24056 KB Output is correct
6 Correct 25 ms 24184 KB Output is correct
7 Correct 24 ms 23972 KB Output is correct
8 Correct 25 ms 24056 KB Output is correct
9 Correct 25 ms 24312 KB Output is correct
10 Correct 26 ms 24184 KB Output is correct
11 Correct 25 ms 24184 KB Output is correct
12 Correct 29 ms 24604 KB Output is correct
13 Correct 28 ms 24568 KB Output is correct
14 Correct 26 ms 24312 KB Output is correct
15 Correct 26 ms 24568 KB Output is correct
16 Correct 28 ms 24448 KB Output is correct
17 Correct 27 ms 24472 KB Output is correct
18 Correct 27 ms 24668 KB Output is correct
19 Correct 28 ms 24568 KB Output is correct
20 Correct 28 ms 24568 KB Output is correct
21 Correct 45 ms 25908 KB Output is correct
22 Correct 59 ms 27016 KB Output is correct
23 Correct 69 ms 27888 KB Output is correct
24 Correct 52 ms 27640 KB Output is correct
25 Correct 36 ms 26744 KB Output is correct
26 Correct 53 ms 27892 KB Output is correct
27 Correct 78 ms 29024 KB Output is correct
28 Correct 54 ms 28144 KB Output is correct
29 Correct 50 ms 27508 KB Output is correct
30 Correct 85 ms 29672 KB Output is correct

Subtask #5
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23928 KB Output is correct
2 Correct 24 ms 24184 KB Output is correct
3 Correct 25 ms 24184 KB Output is correct
4 Correct 23 ms 23928 KB Output is correct
5 Correct 25 ms 24056 KB Output is correct
6 Correct 25 ms 24184 KB Output is correct
7 Correct 24 ms 23972 KB Output is correct
8 Correct 25 ms 24056 KB Output is correct
9 Correct 25 ms 24312 KB Output is correct
10 Correct 26 ms 24184 KB Output is correct
11 Correct 456 ms 48308 KB Output is correct
12 Correct 563 ms 64884 KB Output is correct
13 Correct 334 ms 56028 KB Output is correct
14 Correct 1197 ms 70864 KB Output is correct
15 Correct 1239 ms 84304 KB Output is correct
16 Correct 1219 ms 82716 KB Output is correct
17 Correct 333 ms 67300 KB Output is correct
18 Correct 1074 ms 92148 KB Output is correct
19 Correct 1255 ms 98880 KB Output is correct
20 Correct 814 ms 81252 KB Output is correct
21 Correct 25 ms 24184 KB Output is correct
22 Correct 29 ms 24604 KB Output is correct
23 Correct 28 ms 24568 KB Output is correct
24 Correct 26 ms 24312 KB Output is correct
25 Correct 26 ms 24568 KB Output is correct
26 Correct 28 ms 24448 KB Output is correct
27 Correct 27 ms 24472 KB Output is correct
28 Correct 27 ms 24668 KB Output is correct
29 Correct 28 ms 24568 KB Output is correct
30 Correct 28 ms 24568 KB Output is correct
31 Correct 45 ms 25908 KB Output is correct
32 Correct 59 ms 27016 KB Output is correct
33 Correct 69 ms 27888 KB Output is correct
34 Correct 52 ms 27640 KB Output is correct
35 Correct 36 ms 26744 KB Output is correct
36 Correct 53 ms 27892 KB Output is correct
37 Correct 78 ms 29024 KB Output is correct
38 Correct 54 ms 28144 KB Output is correct
39 Correct 50 ms 27508 KB Output is correct
40 Correct 85 ms 29672 KB Output is correct
41 Correct 246 ms 41588 KB Output is correct
42 Correct 564 ms 66400 KB Output is correct
43 Correct 241 ms 51440 KB Output is correct
44 Correct 331 ms 65160 KB Output is correct
45 Correct 377 ms 65756 KB Output is correct
46 Correct 779 ms 74812 KB Output is correct
47 Correct 1055 ms 75992 KB Output is correct
48 Correct 303 ms 58712 KB Output is correct
49 Correct 762 ms 73296 KB Output is correct
50 Correct 833 ms 72880 KB Output is correct
51 Correct 235 ms 48788 KB Output is correct
52 Correct 316 ms 58036 KB Output is correct
53 Correct 262 ms 57688 KB Output is correct
54 Correct 806 ms 79736 KB Output is correct
55 Correct 445 ms 64360 KB Output is correct