oj.uz

Submission #533479

# Submission time Handle Problem Language Result Execution time Memory
533479 2022-03-06T06:47:03 Z Slavita Autobus (COCI22_autobus) C++14
30 / 70
 1000 ms 1220 KB 
#include <bits/stdc++.h>
#pragma optimize("O3")
#pragma GCC optimize("-O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define ve vector<int>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define pi pair<int,int>
#define all(v) v.begin(),v.end()
#define si(v) (int)v.size()
#define en '\n'
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define ordered_muiltiset tree<int, null_type,less_equal<>, rb_tree_tag,tree_order_statistics_node_update>
//#define int long long
using namespace std;
//using namespace __gnu_pbds;
typedef long long ll;
typedef unsigned long long ull;

const int N = 1e3 + 228;
const int big = 1e9 + 228;
const ll llbig = 1e18 + 228;
//ordered_set os; // os.order_of_key(4), (*os.find_by_order(5))
ll n, m, ans, k, q, d[N][N], mem[N][N];
priority_queue<pair<pair<ll, ll>, ll>> Q;

//#undef int
int main(){
    //#define int long long
    iostream::sync_with_stdio(false); cin.tie(0); ios_base::sync_with_stdio(false); cout.tie(0);
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    cin >> n >> m;
    for (int i = 1; i <= m; i++){
        ll a, b, t;
        cin >> a >> b >> t;
        if (mem[a][b] == 0) mem[a][b] = t;
        else mem[a][b] = min(mem[a][b], t);
    }

    cin >> k >> q;
    while(q--){
        ll start, finish;
        cin >> start >> finish;
        Q.push({{0, 0}, start});

        for (int i = 1; i <= n; i++)
            for (int j = 0; j <= n; j++) d[i][j] = llbig;
        d[start][0] = 0;

        while(!Q.empty()){
            ll v = Q.top().se;
            ll time = -Q.top().fi.fi;
            ll kol = -Q.top().fi.se;
            Q.pop();

            if (kol > k) {continue;}

            for (int u = 1; u <= n; u++){
                ll c = mem[v][u];
                if (!c) continue;
                if (d[u][kol + 1] < time + c) continue;
                d[u][kol + 1] = time + c;
                Q.push({{-time-c, -kol-1}, u});
            }
        }

        ll mn = llbig;
        for (int i = 0; i <= k; i++) mn = min(mn, d[finish][i]);
        cout << (mn == llbig ? -1 : mn) << en;
    }
    return 0;
}

Compilation message

Main.cpp:2: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    2 | #pragma optimize("O3")
      |

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 972 KB Output is correct
2 Correct 78 ms 976 KB Output is correct
3 Correct 181 ms 976 KB Output is correct
4 Correct 272 ms 1108 KB Output is correct
5 Correct 553 ms 1220 KB Output is correct
6 Correct 503 ms 1100 KB Output is correct
7 Correct 948 ms 1128 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Execution timed out 1080 ms 1036 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 21 ms 972 KB Output is correct
8 Correct 78 ms 976 KB Output is correct
9 Correct 181 ms 976 KB Output is correct
10 Correct 272 ms 1108 KB Output is correct
11 Correct 553 ms 1220 KB Output is correct
12 Correct 503 ms 1100 KB Output is correct
13 Correct 948 ms 1128 KB Output is correct
14 Execution timed out 1080 ms 1036 KB Time limit exceeded
15 Halted 0 ms 0 KB -