oj.uz

Submission #407778

# Submission time Handle Problem Language Result Execution time Memory
407778 2021-05-19T04:34:20 Z balbit Toy Train (IOI17_train) C++14
23 / 100
 616 ms 1628 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];
vector<int> rg[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,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;
}



/*
2 4
0 1
1 0
0 0
0 1
1 0
1 1

*/

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 287 ms 1148 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 460 KB 3rd lines differ - on the 2nd token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 175 ms 1628 KB Output is correct
2 Correct 269 ms 1612 KB Output is correct
3 Correct 329 ms 1612 KB Output is correct
4 Correct 14 ms 1616 KB Output is correct
5 Correct 154 ms 1596 KB Output is correct
6 Correct 59 ms 1580 KB Output is correct
7 Correct 15 ms 1580 KB Output is correct
8 Correct 11 ms 1572 KB Output is correct
9 Correct 12 ms 1484 KB Output is correct
10 Correct 11 ms 1552 KB Output is correct
11 Correct 12 ms 1432 KB Output is correct
12 Correct 9 ms 1376 KB Output is correct
13 Correct 10 ms 1572 KB Output is correct
14 Correct 10 ms 1616 KB Output is correct
15 Correct 13 ms 1536 KB Output is correct
16 Correct 9 ms 1612 KB Output is correct
17 Correct 9 ms 1572 KB Output is correct
18 Correct 616 ms 1228 KB Output is correct

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 326 ms 1360 KB 3rd lines differ - on the 1st token, expected: '1', found: '0'
2 Halted 0 ms 0 KB -

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 1576 KB Output is correct
2 Correct 15 ms 1568 KB Output is correct
3 Correct 15 ms 1484 KB Output is correct
4 Correct 9 ms 1396 KB Output is correct
5 Correct 2 ms 588 KB Output is correct
6 Correct 5 ms 1100 KB Output is correct
7 Correct 9 ms 1200 KB Output is correct
8 Correct 8 ms 1220 KB Output is correct
9 Correct 7 ms 1280 KB Output is correct
10 Correct 3 ms 716 KB Output is correct
11 Correct 6 ms 1200 KB Output is correct

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Incorrect 287 ms 1148 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -