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Submission #364285

# Submission time Handle Problem Language Result Execution time Memory
364285 2021-02-08T19:47:56 Z farhan132 Olympic Bus (JOI20_ho_t4) C++17
37 / 100
 1000 ms 10620 KB 
/***Farhan132***/

#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
typedef double dd;
typedef vector<ll> vll;
typedef pair<ll , ll> ii;
typedef vector< ii > vii;
typedef pair < pair < ll , ll > , pair < ll , ll > > cm; 
 
#define ff first
#define ss second
#define pb push_back
#define in insert
#define f0(b) for(int i=0;i<(b);i++)
#define f00(b) for(int j=0;j<(b);j++)
#define f1(b) for(int i=1;i<=(b);i++)
#define f11(b) for(int j=1;j<=(b);j++)
#define f2(a,b) for(int i=(a);i<=(b);i++)
#define f22(a,b) for(int j=(a);j<=(b);j++)
#define sf(a) scanf("%lld",&a)
#define sff(a,b) scanf("%lld %lld", &a , &b)
#define pf(a) printf("%lld\n",a)
#define pff(a,b) printf("%lld %lld\n", a , b)
#define PI 3.14159265359
#define bug printf("**!\n")
#define mem(a , b) memset(a, b ,sizeof(a))
#define front_zero(n) __builtin_clzll(n)
#define back_zero(n) __builtin_ctzll(n)
#define total_one(n) __builtin_popcountll(n)
#define clean fflush(stdout)

const ll mod =  (ll)1e9 + 7;
const ll maxn = (ll)2e5 + 5;
const int nnn = 1048590;
const int inf = numeric_limits<int>::max()-1;
//const ll INF = numeric_limits<ll>::max()-1;
//const ll INF = 1e18;
 
ll dx[]={0,1,0,-1};
ll dy[]={1,0,-1,0};
ll dxx[]={0,1,0,-1,1,1,-1,-1};
ll dyy[]={1,0,-1,0,1,-1,1,-1};

struct edge{
    ll x, y , cost, r , id;
};

ll n , m;
vector < edge > g;
vector < edge > v[205] , rev[205];
set < ll > cool;
ll par[10][205];
ll f[10][205];
ll dis[10][205];
edge W;

void shortest(ll x, ll w, ll lol, edge kk){
    if(lol != -1) for(ll i = 1; i <= n; i++) dis[w][i] = -1; 
    priority_queue < cm , vector < cm > , greater < cm >  > q;
    q.push({{0 , x} , { -1, -1 } });
    while(q.size()){
        auto [P1, P2] = q.top();
        q.pop();
        auto [D , node] = P1;
        auto [p  , e] = P2;
        if(dis[w][node] != -1) continue;
        dis[w][node] = D;
        par[w][node] = p;
        f[w][node] = e;
        if(w <= 1){
          for(edge u : v[node]){
            if(dis[w][u.y] == -1) q.push({{dis[w][node] + u.cost , u.y}, { node , u.id }});
          }
        }else if(w <= 3){
          for(edge u : rev[node]){
             if(dis[w][u.y] == -1) q.push({{dis[w][node] + u.cost , u.y}, { node , u.id }});
          }
        }else if(w <= 5){
            for(edge u : v[node]){
                if(dis[w][u.y] == -1 && u.id != lol) q.push({{dis[w][node] + u.cost , u.y}, { node , u.id }});
            }
            if(kk.x == node && dis[w][kk.y] == -1) q.push({ {dis[w][node] + kk.cost + kk.r, kk.y} , {node , kk.id} } );
        }
    }
    if(w >= 2) return;
    ll cur = 1;
    if(x == 1) cur = n;
    if(dis[w][cur] == -1) return;
    while(1){
        if(par[w][cur] == -1) break;
        cool.in(f[w][cur]);
        cur = par[w][cur];
    }
    return;
}

void solve(){

    cin >> n >> m;

    for(ll i = 1; i <= m; i++){
        ll x , y , cost , r;
        cin >> x >> y >> cost >> r;
        v[x].pb({x,y,cost,r,i});
        rev[y].pb({y,x,cost,r,i});
        g.pb({x,y,cost,r,i});
    }
    mem(dis,-1);
    shortest(1, 0, -1, W);
    shortest(n, 1, -1, W);
    shortest(1, 2, -1, W);
    shortest(n, 3, -1, W);

    ll ans = 1e18;
    if(dis[0][n] != -1 && dis[1][1] != -1) ans = dis[1][1] + dis[0][n];
    for(edge u : g){
        if(cool.count(u.id)){
            edge passing;
            passing = u;
            passing.y = u.x;
            passing.x = u.y;
            shortest(1, 4, u.id, passing);
            shortest(n, 5, u.id, passing);
            if(dis[4][n] == -1 || dis[5][1] == -1) continue;
            ans = min(ans , dis[4][n] + dis[5][1]);
        }else{
            ll X = 1e18 , Y = 1e18;
            if(dis[0][n] != -1) X = dis[0][n];
            if(dis[1][1] != -1) Y = dis[1][1];
            if(dis[0][u.y] != -1 && dis[3][u.x] != -1) X = min(X , dis[0][u.y] + dis[3][u.x] + u.cost );
            if(dis[1][u.y] != -1 && dis[2][u.x] != -1) Y = min(Y,  dis[1][u.y] + dis[2][u.x] + u.cost );
            ans = min(ans , X + Y + u.r); 
        }
    }
    if(ans == 1e18) ans = -1;
    cout << ans;
    return;
    
}

 
int main() {
    
    
    #ifdef LOCAL
        freopen("in.txt", "r", stdin);
        freopen("out.txt", "w", stdout);
    #else 
     //   freopen("cbarn2.in", "r", stdin);
     //   freopen("cbarn2.out", "w", stdout);
     // ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL);
    #endif
    //cout << fixed << setprecision(10);
   // work(maxn);
    //  mem(b,0);
    ll T;
    T=1;
    //cin >> T; 
    //scanf("%lld",&T);
   // ll CT = 0;
    //work();
    while(T--){
        //cout << "Case " << ++CT <<": " ;
        //printf("Case %lld: ",++CT);
        solve();
    }
 
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 492 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 3 ms 620 KB Output is correct
4 Correct 4 ms 620 KB Output is correct
5 Correct 3 ms 620 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 2 ms 620 KB Output is correct
10 Correct 34 ms 620 KB Output is correct
11 Correct 41 ms 620 KB Output is correct
12 Correct 40 ms 620 KB Output is correct
13 Correct 2 ms 492 KB Output is correct
14 Correct 3 ms 620 KB Output is correct
15 Correct 3 ms 620 KB Output is correct
16 Correct 3 ms 620 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 149 ms 10048 KB Output is correct
2 Correct 158 ms 10236 KB Output is correct
3 Correct 158 ms 10108 KB Output is correct
4 Correct 5 ms 748 KB Output is correct
5 Correct 4 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 73 ms 9104 KB Output is correct
10 Correct 77 ms 8956 KB Output is correct
11 Correct 153 ms 10120 KB Output is correct
12 Correct 149 ms 10368 KB Output is correct
13 Correct 131 ms 10108 KB Output is correct
14 Correct 131 ms 10620 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 492 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 101 ms 7424 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 111 ms 9084 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 67 ms 8316 KB Output is correct
9 Correct 66 ms 8956 KB Output is correct
10 Correct 104 ms 8968 KB Output is correct
11 Correct 104 ms 9596 KB Output is correct
12 Correct 105 ms 9596 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 108 ms 9596 KB Output is correct
20 Correct 108 ms 9348 KB Output is correct
21 Correct 118 ms 9340 KB Output is correct
22 Correct 120 ms 9340 KB Output is correct

Subtask #4
0 / 63.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 492 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 3 ms 620 KB Output is correct
4 Correct 4 ms 620 KB Output is correct
5 Correct 3 ms 620 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 2 ms 620 KB Output is correct
10 Correct 34 ms 620 KB Output is correct
11 Correct 41 ms 620 KB Output is correct
12 Correct 40 ms 620 KB Output is correct
13 Correct 2 ms 492 KB Output is correct
14 Correct 3 ms 620 KB Output is correct
15 Correct 3 ms 620 KB Output is correct
16 Correct 3 ms 620 KB Output is correct
17 Correct 149 ms 10048 KB Output is correct
18 Correct 158 ms 10236 KB Output is correct
19 Correct 158 ms 10108 KB Output is correct
20 Correct 5 ms 748 KB Output is correct
21 Correct 4 ms 492 KB Output is correct
22 Correct 1 ms 492 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 73 ms 9104 KB Output is correct
26 Correct 77 ms 8956 KB Output is correct
27 Correct 153 ms 10120 KB Output is correct
28 Correct 149 ms 10368 KB Output is correct
29 Correct 131 ms 10108 KB Output is correct
30 Correct 131 ms 10620 KB Output is correct
31 Correct 5 ms 492 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 101 ms 7424 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 111 ms 9084 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 0 ms 364 KB Output is correct
38 Correct 67 ms 8316 KB Output is correct
39 Correct 66 ms 8956 KB Output is correct
40 Correct 104 ms 8968 KB Output is correct
41 Correct 104 ms 9596 KB Output is correct
42 Correct 105 ms 9596 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 1 ms 364 KB Output is correct
46 Correct 1 ms 364 KB Output is correct
47 Correct 1 ms 364 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 108 ms 9596 KB Output is correct
50 Correct 108 ms 9348 KB Output is correct
51 Correct 118 ms 9340 KB Output is correct
52 Correct 120 ms 9340 KB Output is correct
53 Correct 143 ms 9724 KB Output is correct
54 Correct 198 ms 10236 KB Output is correct
55 Correct 178 ms 9724 KB Output is correct
56 Correct 3 ms 620 KB Output is correct
57 Correct 3 ms 620 KB Output is correct
58 Execution timed out 1093 ms 8188 KB Time limit exceeded
59 Halted 0 ms 0 KB -