oj.uz

Submission #527637

# Submission time Handle Problem Language Result Execution time Memory
527637 2022-02-17T21:11:23 Z Evang Toll (BOI17_toll) C++17
100 / 100
 82 ms 22444 KB 
#include <bits/extc++.h>
using namespace std;
using namespace __gnu_pbds;

#ifdef _DEBUG
#define dout(x) clog << "Line " << __LINE__ << ": " << #x << "=" << (x) << el
#else
#define dout(x)
#endif

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define uid(a,b) uniform_int_distribution<int>(a,b)(rng)

#define ins insert
#define ssize(x) (int((x).size()))
#define bs(args...) binary_search(args)
#define lb(args...) lower_bound(args)
#define ub(args...) upper_bound(args)
#define all(x) (x).begin(),(x).end()
#define mp(a, b) make_pair(a, b)
#define mt(args...) make_tuple(args)
#define pb(x) push_back(x)
#define eb(args...) emplace_back(args)
#define ff first
#define ss second
#define die exit(0)

template<typename T>
using vc = vector<T>;
template<typename T>
using uset = unordered_set<T>;
template<typename A, typename B>
using umap = unordered_map<A, B>;
template<typename T, typename Comp>
using pq = std::priority_queue<T, vc<T>, Comp>;
template<typename T>
using maxpq = pq<T, less<T>>;
template<typename T>
using minpq = pq<T, greater<T>>;
template<typename T>
using oset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

using db = double;
using ld = long double;
using ll = long long;
using ull = unsigned long long;
using pi = pair<int, int>;
using pll = pair<ll, ll>;
using vi = vc<int>;
using vll = vc<ll>;
using vpi = vc<pi>;
using vpll = vc<pll>;
using str = string;

constexpr char el = '\n';
constexpr char sp = ' ';
constexpr int inf = 0x3f3f3f3f;
constexpr ll llinf = 0x3f3f3f3f3f3f3f3fLL;
// ---------------------------------------------------------------------


const int LG = 16;
const int N = 5e4+5;
const int K = 6;
int n, m, k, o, up[LG][N][K], d[2][K];

int dis(int x, int y){
    memset(d[0], 0x3f, sizeof d[0]);
    d[0][y%k] = 0;
    int s = y/k, u = y/k-x/k;

    for(int p = 0; u > 0; ++p, u /= 2){
        if(u&1^1)
            continue;
        for(int i = 0; i < k; ++i){
            d[1][i] = inf;
            for(int j = 0; j < k; ++j)
                d[1][i] = min(d[1][i], up[p][s*k+j][i] + d[0][j]);
        }
        s -= 1<<p;
        swap(d[0], d[1]);
    }

    return d[0][x%k];
}

signed main() {
    ios::sync_with_stdio(0); cin.tie(0);
    cout << fixed; clog << fixed; clog << unitbuf;
#ifdef _DEBUG
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    freopen("debug.txt", "w", stderr);
#else
    //freopen(".in", "r", stdin);
    //freopen(".out", "w", stdout);
#endif

    memset(up, 0x3f, sizeof up);
    cin >> k >> n >> m >> o;
    while(m--){
        int x, y, w;
        cin >> x >> y >> w;
        up[0][y][x%k] = min(up[0][y][x%k], w);
    }

    for(int g = 1; g < LG; ++g)
        for(int v = 0; v < n; ++v)
            for(int i = 0; i < k; ++i)
                for(int j = 0; j < k; ++j)
                    if((v/k-(1<<(g-1)))*k+j>=0)
                    up[g][v][i] = min(up[g][v][i],
                            up[g-1][(v/k-(1<<(g-1)))*k+j][i] +
                            up[g-1][v][j]);

#ifdef _DEBUG
    clog << "Line " << __LINE__ << ":\n";
    for(int i = 0; i < n; ++i){
        for(int j = 0; j < k; ++j)
            clog << up[2][i][j] << sp;
        clog << el;
    }
    clog << el;
#endif

    while(o--){
        int x, y;
        cin >> x >> y;
        if(x/k >= y/k){
            dout(1);
            cout << -1 << el;
            continue;
        }
        int ans = dis(x, y);
        if(ans>=inf)
            cout << -1 << el;
        else
            cout << ans << el;
    }
}

Compilation message

toll.cpp: In function 'int dis(int, int)':
toll.cpp:73:13: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   73 |         if(u&1^1)
      |            ~^~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 20076 KB Output is correct
2 Correct 8 ms 19028 KB Output is correct
3 Correct 8 ms 19100 KB Output is correct
4 Correct 8 ms 19020 KB Output is correct
5 Correct 9 ms 19020 KB Output is correct
6 Correct 9 ms 19020 KB Output is correct
7 Correct 9 ms 19228 KB Output is correct
8 Correct 33 ms 19972 KB Output is correct
9 Correct 31 ms 19976 KB Output is correct
10 Correct 22 ms 19276 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 20700 KB Output is correct
2 Correct 9 ms 19020 KB Output is correct
3 Correct 8 ms 19020 KB Output is correct
4 Correct 8 ms 19088 KB Output is correct
5 Correct 8 ms 19020 KB Output is correct
6 Correct 8 ms 19112 KB Output is correct
7 Correct 11 ms 19148 KB Output is correct
8 Correct 12 ms 19152 KB Output is correct
9 Correct 29 ms 19972 KB Output is correct
10 Correct 57 ms 21388 KB Output is correct
11 Correct 47 ms 20776 KB Output is correct
12 Correct 42 ms 20372 KB Output is correct
13 Correct 62 ms 21484 KB Output is correct
14 Correct 40 ms 20552 KB Output is correct
15 Correct 46 ms 20292 KB Output is correct
16 Correct 47 ms 20236 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 18984 KB Output is correct
2 Correct 8 ms 19108 KB Output is correct
3 Correct 9 ms 19096 KB Output is correct
4 Correct 8 ms 19040 KB Output is correct
5 Correct 8 ms 19108 KB Output is correct
6 Correct 10 ms 19020 KB Output is correct
7 Correct 9 ms 19020 KB Output is correct
8 Correct 10 ms 19116 KB Output is correct
9 Correct 13 ms 19136 KB Output is correct
10 Correct 26 ms 19840 KB Output is correct
11 Correct 39 ms 20548 KB Output is correct
12 Correct 51 ms 21260 KB Output is correct
13 Correct 54 ms 21504 KB Output is correct
14 Correct 46 ms 20804 KB Output is correct
15 Correct 43 ms 20172 KB Output is correct
16 Correct 43 ms 20164 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 18984 KB Output is correct
2 Correct 8 ms 19108 KB Output is correct
3 Correct 9 ms 19096 KB Output is correct
4 Correct 8 ms 19040 KB Output is correct
5 Correct 8 ms 19108 KB Output is correct
6 Correct 10 ms 19020 KB Output is correct
7 Correct 9 ms 19020 KB Output is correct
8 Correct 10 ms 19116 KB Output is correct
9 Correct 13 ms 19136 KB Output is correct
10 Correct 26 ms 19840 KB Output is correct
11 Correct 39 ms 20548 KB Output is correct
12 Correct 51 ms 21260 KB Output is correct
13 Correct 54 ms 21504 KB Output is correct
14 Correct 46 ms 20804 KB Output is correct
15 Correct 43 ms 20172 KB Output is correct
16 Correct 43 ms 20164 KB Output is correct
17 Correct 40 ms 20612 KB Output is correct
18 Correct 8 ms 19020 KB Output is correct
19 Correct 8 ms 19100 KB Output is correct
20 Correct 8 ms 19100 KB Output is correct
21 Correct 11 ms 19020 KB Output is correct
22 Correct 8 ms 19020 KB Output is correct
23 Correct 10 ms 19148 KB Output is correct
24 Correct 9 ms 19148 KB Output is correct
25 Correct 11 ms 19120 KB Output is correct
26 Correct 10 ms 19184 KB Output is correct
27 Correct 37 ms 19908 KB Output is correct
28 Correct 64 ms 21260 KB Output is correct
29 Correct 58 ms 21512 KB Output is correct
30 Correct 54 ms 20996 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 20076 KB Output is correct
2 Correct 8 ms 19028 KB Output is correct
3 Correct 8 ms 19100 KB Output is correct
4 Correct 8 ms 19020 KB Output is correct
5 Correct 9 ms 19020 KB Output is correct
6 Correct 9 ms 19020 KB Output is correct
7 Correct 9 ms 19228 KB Output is correct
8 Correct 33 ms 19972 KB Output is correct
9 Correct 31 ms 19976 KB Output is correct
10 Correct 22 ms 19276 KB Output is correct
11 Correct 41 ms 20700 KB Output is correct
12 Correct 9 ms 19020 KB Output is correct
13 Correct 8 ms 19020 KB Output is correct
14 Correct 8 ms 19088 KB Output is correct
15 Correct 8 ms 19020 KB Output is correct
16 Correct 8 ms 19112 KB Output is correct
17 Correct 11 ms 19148 KB Output is correct
18 Correct 12 ms 19152 KB Output is correct
19 Correct 29 ms 19972 KB Output is correct
20 Correct 57 ms 21388 KB Output is correct
21 Correct 47 ms 20776 KB Output is correct
22 Correct 42 ms 20372 KB Output is correct
23 Correct 62 ms 21484 KB Output is correct
24 Correct 40 ms 20552 KB Output is correct
25 Correct 46 ms 20292 KB Output is correct
26 Correct 47 ms 20236 KB Output is correct
27 Correct 11 ms 18984 KB Output is correct
28 Correct 8 ms 19108 KB Output is correct
29 Correct 9 ms 19096 KB Output is correct
30 Correct 8 ms 19040 KB Output is correct
31 Correct 8 ms 19108 KB Output is correct
32 Correct 10 ms 19020 KB Output is correct
33 Correct 9 ms 19020 KB Output is correct
34 Correct 10 ms 19116 KB Output is correct
35 Correct 13 ms 19136 KB Output is correct
36 Correct 26 ms 19840 KB Output is correct
37 Correct 39 ms 20548 KB Output is correct
38 Correct 51 ms 21260 KB Output is correct
39 Correct 54 ms 21504 KB Output is correct
40 Correct 46 ms 20804 KB Output is correct
41 Correct 43 ms 20172 KB Output is correct
42 Correct 43 ms 20164 KB Output is correct
43 Correct 40 ms 20612 KB Output is correct
44 Correct 8 ms 19020 KB Output is correct
45 Correct 8 ms 19100 KB Output is correct
46 Correct 8 ms 19100 KB Output is correct
47 Correct 11 ms 19020 KB Output is correct
48 Correct 8 ms 19020 KB Output is correct
49 Correct 10 ms 19148 KB Output is correct
50 Correct 9 ms 19148 KB Output is correct
51 Correct 11 ms 19120 KB Output is correct
52 Correct 10 ms 19184 KB Output is correct
53 Correct 37 ms 19908 KB Output is correct
54 Correct 64 ms 21260 KB Output is correct
55 Correct 58 ms 21512 KB Output is correct
56 Correct 54 ms 20996 KB Output is correct
57 Correct 82 ms 22444 KB Output is correct
58 Correct 32 ms 20036 KB Output is correct
59 Correct 48 ms 20864 KB Output is correct