oj.uz

Submission #408094

# Submission time Handle Problem Language Result Execution time Memory
408094 2021-05-19T05:55:55 Z balbit Toy Train (IOI17_train) C++14
49 / 100
 446 ms 32772 KB 
#include "train.h"

#include <bits/stdc++.h>
using namespace std;
//#define BALBIT
#define ll long long
#define y1 zck_is_king
#define pii pair<int, int>
#define ull unsigned ll
#define f first
#define s second
#define ALL(x) x.begin(),x.end()
#define SZ(x) (int)x.size()
#define SQ(x) (x)*(x)
#define MN(a,b) a = min(a,(__typeof__(a))(b))
#define MX(a,b) a = max(a,(__typeof__(a))(b))
#define pb push_back
#define REP(i,n) for (int i = 0; i<n; ++i)
#define RREP(i,n) for (int i = n-1; i>=0; --i)
#define REP1(i,n) for (int i = 1; i<=n; ++i)
#define SORT_UNIQUE(c) (sort(c.begin(),c.end()), c.resize(distance(c.begin(),unique(c.begin(),c.end()))))
#ifdef BALBIT
#define IOS()
#define bug(...) fprintf(stderr,"#%d (%s) = ",__LINE__,#__VA_ARGS__),_do(__VA_ARGS__);
template<typename T> void _do(T &&x){cerr<<x<<endl;}
template<typename T, typename ...S> void _do(T &&x, S &&...y){cerr<<x<<", ";_do(y...);}
#else
#define IOS() ios_base::sync_with_stdio(0);cin.tie(0);
#define endl '\n'
#define bug(...)
#endif

const int iinf = 1e9+10;
const ll inf = 1ll<<60;
const ll mod = 1e9+7 ;


void GG(){cout<<"0\n"; exit(0);}

ll mpow(ll a, ll n, ll mo = mod){ // a^n % mod
    ll re=1;
    while (n>0){
        if (n&1) re = re*a %mo;
        a = a*a %mo;
        n>>=1;
    }
    return re;
}

ll inv (ll b, ll mo = mod){
    if (b==1) return b;
    return (mo-mo/b) * inv(mo%b,mo) % mo;
}

const int maxn = 5e3+5;

bool win[maxn];
int safe[maxn]; // safe edges coming out of this node

vector<int> g[maxn];
bool notcyc[maxn];
vector<int> rg[maxn];

std::vector<int> win2(std::vector<int> who, std::vector<int> station, std::vector<int> UU, std::vector<int> VV) {
	int n = SZ(who);
	std::vector<int> res(n);
	REP(i,n) g[i].clear(), rg[i].clear();
	memset(win, 0, sizeof win);
	memset(safe, 0, sizeof safe);
	memset(notcyc, 0, sizeof notcyc);
    REP(i,SZ(UU)) {
        g[UU[i]].pb(VV[i]);
        rg[VV[i]].pb(UU[i]);
    }
//    return res;
    REP(round, 3)
    REP(T, n) {
        if (res[T]) continue;
        // T is target node
        if (!station[T]) continue;
        // who = 1: any is required to win
        REP(i,n) safe[i] = SZ(g[i]);
        memset(win, 0, sizeof win);
        win[T] = 1;
        queue<int> q;
        REP(i,n) if (res[i] || i==T) q.push(i);
        while (!q.empty() ){
            int v = q.front(); q.pop();
            for (int u : rg[v]) {
                if (!win[u]) {
                    if (who[u] == 1) {
                        // any required
//                        bug(u, who[u]);
                        win[u] = 1; q.push(u);
                    }else{
                        -- safe[u];
                        if (safe[u] == 0) {
                            q.push(u);
                            win[u] = 1;
                        }
                    }
                }
            }
        }
//        continue;
        bool ok = 0;
        if (who[T] == 1) {
            // any required
            for (int u : g[T]) {
                if (win[u]) {
                    ok = 1; break;
                }
            }
        }else{
            ok = 1;
            for (int u : g[T]) {
                if (!win[u]) {
//                    bug(T, u, win[u]);
                    ok=0; break;
                }
            }
        }
//        bug(T, ok);
        if (ok) {
            REP(i,n) {
//                bug(i, win[i]);
                if (win[i]) res[i] = 1;
            }
        }
    }
	return res;
}

bitset<maxn> fren[maxn];
vector<int> love[maxn];
int nlove[maxn];

std::vector<int> who_wins(std::vector<int> who, std::vector<int> station, std::vector<int> UU, std::vector<int> VV) {
	int n = SZ(who);
	std::vector<int> res(n);
	REP(i,n) g[i].clear(), rg[i].clear();
	memset(win, 0, sizeof win);
	memset(safe, 0, sizeof safe);
	memset(notcyc, 0, sizeof notcyc);
	memset(nlove, 0, sizeof nlove);
    REP(i,n) love[i].clear();
    REP(i,SZ(UU)) {
        g[UU[i]].pb(VV[i]);
        rg[VV[i]].pb(UU[i]);
    }
//    return res;
     REP(T, n) {
//        if (res[T]) continue;
        // T is target node
        if (!station[T]) continue;
        // who = 1: any is required to win
        REP(i,n) safe[i] = SZ(g[i]);
        memset(win, 0, sizeof win);
        win[T] = 1;
        queue<int> q; q.push(T);
        while (!q.empty() ){
            int v = q.front(); q.pop();
            for (int u : rg[v]) {
                if (!win[u]) {
                    if (who[u] == 1) {
                        // any required
//                        bug(u, who[u]);
                        win[u] = 1; q.push(u);
                    }else{
                        -- safe[u];
                        if (safe[u] == 0) {
                            q.push(u);
                            win[u] = 1;
                        }
                    }
                }
            }
        }
        bool ok = 0;
        if (who[T] == 1) {
            // any required
            for (int u : g[T]) {
                if (win[u]) {
                    ok = 1; break;
                }
            }
        }else{
            ok = 1;
            for (int u : g[T]) {
                if (!win[u]) {
//                    bug(T, u, win[u]);
                    ok=0; break;
                }
            }
        }
        bug(T, ok);
        win[T] = ok;
        REP(i,n){
            if (win[i]) {
                love[T].pb(i);
                ++nlove[i];
//                bug(T,i);
            }
        }

    }
    {

        queue<int> q;
        REP(i,n) {
            if (station[i]) q.push(i), notcyc[i] = 1;
            else safe[i] = SZ(g[i]);
        }
        // create things that aren't zero-cycles
        while (!q.empty() ) {
            int v = q.front(); q.pop();
            for (int u : rg[v]) {
                if (!notcyc[u]) {
                    if (who[u] == 1) {
                        // i like stations!
                        notcyc[u] = 1; q.push(u);
                    }else{
                        --safe[u];
                        if( safe[u] == 0) {
                            notcyc[u] = 1; q.push(u);
                        }
                    }
                }
            }
        }
    }
    memset(win, 0, sizeof win);
    {
        queue<int> q;
        REP(i,n) {
            if (!notcyc[i] || (who[i] == 1 && nlove[i] == 0)) {
                bug(i, notcyc[i]);
                q.push(i);
                win[i] = 1;
            }
//            safe[i] = SZ(g[i]);
        }
        bitset<maxn> alive;
        alive.set();
        while (!q.empty() ) {
            int v = q.front(); q.pop();
//            if (win[v]) continue;
            for (int u : rg[v]) {
                if (!win[u]) {
                    if (who[u] == 0) {
                        // i hate stations!
                        win[u] = 1; q.push(u);
                    }
                }
            }
            if (station[v]) {
                for (int u : love[v]) {
                    if (!win[u])
                        if (who[u] == 1 && (--nlove[u] <= 0) ) {
                            q.push(u); win[u] = 1;
                        }
                }
            }
        }

    }
    REP(i,n) res[i] = !win[i];
	return res;
}
#ifdef BALBIT
signed main() {
    int n,m; cin>>n>>m;
    REP(ffff, 1000) {
        vector<int >a,r;
        REP(i,n) a.pb(rand()%2);
        REP(i,n) {
            r.pb(rand()%2);
            if (r.back()) a[i] = 1;
        }
        vector<int> u,v;
        REP(i,m) {
            u.pb(rand()%n);
            if (i<n) u[i] = i;
            v.pb(rand()%n);
        }
        vector<int> r1 = win2(a,r,u,v);
        vector<int> r2 = who_wins(a,r,u,v);
        if (r1 != r2) {
            for (int x : r1) cout<<x<<' ';
            cout<<endl;
            for (int x : r2) cout<<x<<' ';
            cout<<endl;

            cout<<"A"<<endl;
            for (int x : a) cout<<x<<' ';
            cout<<endl;
            for (int x : r) cout<<x<<' ';
            cout<<endl;
            for (int x : u) cout<<x<<' ';
            cout<<endl;
            for (int x : v) cout<<x<<' ';
            cout<<endl;
            assert(0);
        }
    }
}
#endif
/*
2 4
0 1
1 0
0 0
0 1
1 0
1 1

*/

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 1280 KB Output is correct
2 Correct 63 ms 1224 KB Output is correct
3 Correct 65 ms 1228 KB Output is correct
4 Correct 55 ms 1256 KB Output is correct
5 Correct 91 ms 1240 KB Output is correct
6 Correct 66 ms 1208 KB Output is correct
7 Correct 70 ms 1216 KB Output is correct
8 Correct 60 ms 1440 KB Output is correct
9 Correct 56 ms 1248 KB Output is correct
10 Correct 61 ms 1200 KB Output is correct
11 Correct 63 ms 1216 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 588 KB Output is correct
2 Correct 1 ms 588 KB Output is correct
3 Correct 2 ms 588 KB Output is correct
4 Correct 1 ms 588 KB Output is correct
5 Correct 2 ms 588 KB Output is correct
6 Correct 2 ms 588 KB Output is correct
7 Correct 1 ms 588 KB Output is correct
8 Correct 1 ms 588 KB Output is correct
9 Correct 1 ms 588 KB Output is correct
10 Correct 1 ms 588 KB Output is correct
11 Correct 2 ms 588 KB Output is correct
12 Correct 2 ms 588 KB Output is correct
13 Correct 1 ms 588 KB Output is correct
14 Correct 2 ms 588 KB Output is correct
15 Correct 2 ms 588 KB Output is correct
16 Correct 2 ms 588 KB Output is correct
17 Correct 2 ms 588 KB Output is correct
18 Correct 1 ms 588 KB Output is correct
19 Correct 1 ms 588 KB Output is correct
20 Correct 1 ms 588 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 11288 KB Output is correct
2 Correct 167 ms 18700 KB Output is correct
3 Correct 217 ms 22464 KB Output is correct
4 Correct 346 ms 30880 KB Output is correct
5 Correct 84 ms 7212 KB Output is correct
6 Correct 36 ms 2776 KB Output is correct
7 Correct 446 ms 32076 KB Output is correct
8 Correct 13 ms 1484 KB Output is correct
9 Correct 12 ms 1484 KB Output is correct
10 Correct 11 ms 1612 KB Output is correct
11 Correct 9 ms 1488 KB Output is correct
12 Correct 10 ms 1472 KB Output is correct
13 Correct 11 ms 1600 KB Output is correct
14 Correct 12 ms 1560 KB Output is correct
15 Correct 12 ms 1496 KB Output is correct
16 Correct 10 ms 1484 KB Output is correct
17 Correct 10 ms 1596 KB Output is correct
18 Correct 315 ms 32772 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 105 ms 1356 KB Output is correct
2 Correct 10 ms 1400 KB Output is correct
3 Correct 12 ms 1512 KB Output is correct
4 Correct 60 ms 1520 KB Output is correct
5 Correct 12 ms 1484 KB Output is correct
6 Correct 15 ms 1512 KB Output is correct
7 Correct 22 ms 1484 KB Output is correct
8 Correct 31 ms 1484 KB Output is correct
9 Correct 123 ms 1432 KB Output is correct
10 Correct 88 ms 1520 KB Output is correct
11 Correct 126 ms 1536 KB Output is correct
12 Correct 94 ms 1528 KB Output is correct
13 Correct 10 ms 1536 KB Output is correct
14 Correct 10 ms 1536 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 1536 KB Output is correct
2 Correct 16 ms 1484 KB Output is correct
3 Correct 11 ms 1560 KB Output is correct
4 Correct 12 ms 1484 KB Output is correct
5 Correct 2 ms 716 KB Output is correct
6 Correct 6 ms 1136 KB Output is correct
7 Correct 9 ms 1228 KB Output is correct
8 Correct 9 ms 1228 KB Output is correct
9 Correct 6 ms 1228 KB Output is correct
10 Correct 3 ms 844 KB Output is correct
11 Correct 7 ms 1228 KB Output is correct

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 1280 KB Output is correct
2 Correct 63 ms 1224 KB Output is correct
3 Correct 65 ms 1228 KB Output is correct
4 Correct 55 ms 1256 KB Output is correct
5 Correct 91 ms 1240 KB Output is correct
6 Correct 66 ms 1208 KB Output is correct
7 Correct 70 ms 1216 KB Output is correct
8 Correct 60 ms 1440 KB Output is correct
9 Correct 56 ms 1248 KB Output is correct
10 Correct 61 ms 1200 KB Output is correct
11 Correct 63 ms 1216 KB Output is correct
12 Correct 1 ms 588 KB Output is correct
13 Correct 1 ms 588 KB Output is correct
14 Correct 2 ms 588 KB Output is correct
15 Correct 1 ms 588 KB Output is correct
16 Correct 2 ms 588 KB Output is correct
17 Correct 2 ms 588 KB Output is correct
18 Correct 1 ms 588 KB Output is correct
19 Correct 1 ms 588 KB Output is correct
20 Correct 1 ms 588 KB Output is correct
21 Correct 1 ms 588 KB Output is correct
22 Correct 2 ms 588 KB Output is correct
23 Correct 2 ms 588 KB Output is correct
24 Correct 1 ms 588 KB Output is correct
25 Correct 2 ms 588 KB Output is correct
26 Correct 2 ms 588 KB Output is correct
27 Correct 2 ms 588 KB Output is correct
28 Correct 2 ms 588 KB Output is correct
29 Correct 1 ms 588 KB Output is correct
30 Correct 1 ms 588 KB Output is correct
31 Correct 1 ms 588 KB Output is correct
32 Correct 90 ms 11288 KB Output is correct
33 Correct 167 ms 18700 KB Output is correct
34 Correct 217 ms 22464 KB Output is correct
35 Correct 346 ms 30880 KB Output is correct
36 Correct 84 ms 7212 KB Output is correct
37 Correct 36 ms 2776 KB Output is correct
38 Correct 446 ms 32076 KB Output is correct
39 Correct 13 ms 1484 KB Output is correct
40 Correct 12 ms 1484 KB Output is correct
41 Correct 11 ms 1612 KB Output is correct
42 Correct 9 ms 1488 KB Output is correct
43 Correct 10 ms 1472 KB Output is correct
44 Correct 11 ms 1600 KB Output is correct
45 Correct 12 ms 1560 KB Output is correct
46 Correct 12 ms 1496 KB Output is correct
47 Correct 10 ms 1484 KB Output is correct
48 Correct 10 ms 1596 KB Output is correct
49 Correct 315 ms 32772 KB Output is correct
50 Correct 105 ms 1356 KB Output is correct
51 Correct 10 ms 1400 KB Output is correct
52 Correct 12 ms 1512 KB Output is correct
53 Correct 60 ms 1520 KB Output is correct
54 Correct 12 ms 1484 KB Output is correct
55 Correct 15 ms 1512 KB Output is correct
56 Correct 22 ms 1484 KB Output is correct
57 Correct 31 ms 1484 KB Output is correct
58 Correct 123 ms 1432 KB Output is correct
59 Correct 88 ms 1520 KB Output is correct
60 Correct 126 ms 1536 KB Output is correct
61 Correct 94 ms 1528 KB Output is correct
62 Correct 10 ms 1536 KB Output is correct
63 Correct 10 ms 1536 KB Output is correct
64 Correct 11 ms 1536 KB Output is correct
65 Correct 16 ms 1484 KB Output is correct
66 Correct 11 ms 1560 KB Output is correct
67 Correct 12 ms 1484 KB Output is correct
68 Correct 2 ms 716 KB Output is correct
69 Correct 6 ms 1136 KB Output is correct
70 Correct 9 ms 1228 KB Output is correct
71 Correct 9 ms 1228 KB Output is correct
72 Correct 6 ms 1228 KB Output is correct
73 Correct 3 ms 844 KB Output is correct
74 Correct 7 ms 1228 KB Output is correct
75 Correct 180 ms 18500 KB Output is correct
76 Correct 205 ms 18748 KB Output is correct
77 Correct 271 ms 22484 KB Output is correct
78 Correct 248 ms 22440 KB Output is correct
79 Correct 246 ms 22476 KB Output is correct
80 Incorrect 292 ms 14388 KB 3rd lines differ - on the 3rd token, expected: '1', found: '0'
81 Halted 0 ms 0 KB -