oj.uz

Submission #54676

# Submission time Handle Problem Language Result Execution time Memory
54676 2018-07-04T12:02:34 Z aquablitz11 Jakarta Skyscrapers (APIO15_skyscraper) C++14
57 / 100
 1000 ms 43016 KB 
// headers
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
// types
template<class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
using dbl = double;
using ll = long long;
using ull = unsigned long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pli = pair<ll, int>;
using piipi = pair<pii, int>;
using pipii = pair<int, pii>;
using plpii = pair<ll, pii>;
using ppii = pair<pii, pii>;
// loops
#define forx(i, x, y) for (int i = (x); i <= (y); ++i)
#define forn(i, n) for (int i = 0; i < (n); ++i)
#define for1(i, n) for (int i = 1; i <= (n); ++i)
#define rofx(i, x, y) for (int i = x; i >= y; --i)
#define rofn(i, n) for (int i = n-1; i >= 0; --i)
#define rof1(i, n) for (int i = n; i >= 1; --i)
#define fora(x, v) for (auto x : v)
// define shortcuts
#define all(x) begin(x), end(x)
#define pb push_back
#define eb emplace_back
#define F first
#define S second
#define X first
#define Y second
#define MP make_pair
#define MT make_tuple
// functions
template<class T> inline bool hasbit(T x, int i) { return x&(1<<i); }
template<class T> inline T togbit(T x, int i) { return x|(1<<i); }
template<class T> inline T setbit(T x, int i) { return x|(1<<i); }
template<class T> inline T rembit(T x, int i) { return x&~(1<<i); }
template<class T> inline bool setmax(T &a, const T &b) { return b > a ? a = b, true : false; }
template<class T> inline bool setmin(T &a, const T &b) { return b < a ? a = b, true : false; }
template<class T> int compress(vector<T> &v) { sort(all(v)); v.resize(unique(all(v))-v.begin()); return v.size(); }
// read functions
int read_int() { int x; scanf("%d", &x); return x; }
ll read_ll() { ll x; scanf("%" SCNd64, &x); return x; }
ull read_ull() { ull x; scanf("%" SCNu64, &x); return x; }
dbl read_dbl() { dbl x; scanf("%lf", &x); return x; }
void _R(int &x) { x = read_int(); }
void _R(ll &x) { x = read_ll(); }
void _R(dbl &x) { x = read_dbl(); }
void R() {}
template<class T, class... U> void R(T &head, U &... tail) { _R(head); R(tail...); }
// print functions
template<class T> void _W(const T &x) { cout << x; }
void _W(const int &x) { printf("%d", x); }
void _W(const ll &x) { printf("%" PRId64, x); }
void _W(const ull &x) { printf("%" PRIu64, x); }
void _W(const double &x) { printf("%.16f", x); }
void _W(const char &x) { putchar(x); }
void _W(const char *x) { printf("%s", x); }
template<class T> void _W(const vector<T> &x) { for (auto i = x.begin(); i != x.end(); _W(*i++)) if (i != x.cbegin()) putchar(' '); }
void W() {}
template<class T, class... U> void W(const T &head, const U &... tail) { _W(head); putchar(sizeof...(tail) ? ' ' : '\n'); W(tail...); }
// pseudo-random number generator
template<class T, T x1, T x2, T x3, int y1, int y2, int y3>
struct PRNG {
    using S = typename make_signed<T>::type;
    T s;
    PRNG(T _s = 0) : s(_s) {}
    T next() {
        T z = (s += x1);
        z = (z ^ (z >> y1)) * x2;
        z = (z ^ (z >> y2)) * x3;
        return z ^ (z >> y3);
    }
    T next(T n) { return next() % n; }
    S next(S l, S r) { return l + next(r - l + 1); }
    T operator()() { return next(); }
    T operator()(T n) { return next(n); }
    S operator()(S l, S r) { return next(l, r); }
    static T gen(T s) { return PRNG(s)(); }
    template<class U>
    void shuffle(U first, U last) {
        size_t n = last - first;
        for (size_t i = 0; i < n; i++) swap(first[i], first[next(i + 1)]);
    }
};
PRNG<uint32_t, 0x9E3779B1, 0x85EBCA6B, 0xC2B2AE35, 16, 13, 16> r32;
PRNG<uint64_t, 0x9E3779B97F4A7C15, 0xBF58476D1CE4E5B9, 0x94D049BB133111EB, 30, 27, 31> r64;
// program
int _main();
int main() {
    //ios::sync_with_stdio(false), cin.tie(0);
    //time_t begin = clock();
    int ret = _main();
    //time_t end = clock();
    //fprintf(stderr, "Program took %.3f seconds to compute\n", ((double)end-begin)/CLOCKS_PER_SEC);
    return ret;
}
 
/************************************************************
                CODE STARTS BELOW THIS POINT
************************************************************/
 
const int N = 30010;
const int M = 30010;
const int INF = 1e9;
 
vector<int> li[N];
unordered_map<int, int> _dist[N];

int &dist(int i, int j) {
    if (!_dist[i].count(j))
        _dist[i][j] = INF;
    return _dist[i][j];
}
 
int _main()
{
    int n, m;
    R(n, m);
    int s, t;
    forn(ix, m) {
        int i, j;
        R(i, j);
        li[i].pb(j);
        if (ix == 0) s = i;
        if (ix == 1) t = i;
    }
 
    deque<pii> Q;
    dist(s,0) = 0;
    Q.push_back({s, 0});
    while (!Q.empty()) {
        int i = Q.front().F, j = Q.front().S;
        int d = dist(i, j);
        Q.pop_front();
        if (i == t) {
            W(d);
            return 0;
        }
        if (j == 0)  {
            fora(k, li[i]) if (dist(i, k) == INF) {
                dist(i, k) = d;
                Q.push_front({i, k});
            }
        } else {
            if (dist(i, 0) == INF) {
                dist(i, 0) = d;
                Q.push_front({i, 0});
            }
            if (i-j >= 0 && dist(i-j, j) == INF) {
                dist(i-j, j) = d+1;
                Q.push_back({i-j, j});
            }
            if (i+j < n && dist(i+j, j) == INF) {
                dist(i+j, j) = d+1;
                Q.push_back({i+j, j});
            }
        }
    }
    W(-1);
    
    return 0;
}

Compilation message

skyscraper.cpp: In function 'll read_ll()':
skyscraper.cpp:49:42: warning: format '%ld' expects argument of type 'long int*', but argument 2 has type 'll* {aka long long int*}' [-Wformat=]
 ll read_ll() { ll x; scanf("%" SCNd64, &x); return x; }
                                        ~~^
skyscraper.cpp: In function 'ull read_ull()':
skyscraper.cpp:50:45: warning: format '%lu' expects argument of type 'long unsigned int*', but argument 2 has type 'ull* {aka long long unsigned int*}' [-Wformat=]
 ull read_ull() { ull x; scanf("%" SCNu64, &x); return x; }
                                           ~~^
skyscraper.cpp: In function 'void _W(const ll&)':
skyscraper.cpp:60:44: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
 void _W(const ll &x) { printf("%" PRId64, x); }
                                           ~^
skyscraper.cpp: In function 'void _W(const ull&)':
skyscraper.cpp:61:45: warning: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'ull {aka long long unsigned int}' [-Wformat=]
 void _W(const ull &x) { printf("%" PRIu64, x); }
                                            ~^
skyscraper.cpp: In function 'int read_int()':
skyscraper.cpp:48:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 int read_int() { int x; scanf("%d", &x); return x; }
                         ~~~~~^~~~~~~~~~
skyscraper.cpp: In function 'll read_ll()':
skyscraper.cpp:49:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 ll read_ll() { ll x; scanf("%" SCNd64, &x); return x; }
                      ~~~~~^~~~~~~~~~~~~~~~
skyscraper.cpp: In function 'ull read_ull()':
skyscraper.cpp:50:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 ull read_ull() { ull x; scanf("%" SCNu64, &x); return x; }
                         ~~~~~^~~~~~~~~~~~~~~~
skyscraper.cpp: In function 'dbl read_dbl()':
skyscraper.cpp:51:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 dbl read_dbl() { dbl x; scanf("%lf", &x); return x; }
                         ~~~~~^~~~~~~~~~~
skyscraper.cpp: In function 'int _main()':
skyscraper.cpp:142:9: warning: 't' may be used uninitialized in this function [-Wmaybe-uninitialized]
         if (i == t) {
         ^~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 2680 KB Output is correct
2 Correct 5 ms 2860 KB Output is correct
3 Correct 4 ms 2860 KB Output is correct
4 Correct 4 ms 2860 KB Output is correct
5 Correct 3 ms 2860 KB Output is correct
6 Correct 4 ms 2860 KB Output is correct
7 Correct 4 ms 2860 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2860 KB Output is correct
2 Correct 4 ms 2860 KB Output is correct
3 Correct 4 ms 2860 KB Output is correct
4 Correct 4 ms 2888 KB Output is correct
5 Correct 4 ms 2900 KB Output is correct
6 Correct 4 ms 3028 KB Output is correct
7 Correct 4 ms 3028 KB Output is correct
8 Correct 4 ms 3028 KB Output is correct
9 Correct 4 ms 3028 KB Output is correct
10 Correct 4 ms 3028 KB Output is correct
11 Correct 4 ms 3028 KB Output is correct
12 Correct 4 ms 3028 KB Output is correct
13 Correct 4 ms 3028 KB Output is correct
14 Correct 6 ms 3136 KB Output is correct
15 Correct 6 ms 3136 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 3136 KB Output is correct
2 Correct 4 ms 3136 KB Output is correct
3 Correct 4 ms 3136 KB Output is correct
4 Correct 4 ms 3136 KB Output is correct
5 Correct 3 ms 3136 KB Output is correct
6 Correct 5 ms 3136 KB Output is correct
7 Correct 3 ms 3136 KB Output is correct
8 Correct 4 ms 3136 KB Output is correct
9 Correct 4 ms 3136 KB Output is correct
10 Correct 4 ms 3136 KB Output is correct
11 Correct 4 ms 3136 KB Output is correct
12 Correct 6 ms 3136 KB Output is correct
13 Correct 5 ms 3136 KB Output is correct
14 Correct 8 ms 3196 KB Output is correct
15 Correct 5 ms 3196 KB Output is correct
16 Correct 4 ms 3196 KB Output is correct
17 Correct 6 ms 3196 KB Output is correct
18 Correct 4 ms 3196 KB Output is correct
19 Correct 4 ms 3196 KB Output is correct
20 Correct 5 ms 3196 KB Output is correct
21 Correct 4 ms 3196 KB Output is correct
22 Correct 5 ms 3196 KB Output is correct
23 Correct 6 ms 3208 KB Output is correct
24 Correct 8 ms 3336 KB Output is correct
25 Correct 5 ms 3336 KB Output is correct
26 Correct 6 ms 3336 KB Output is correct
27 Correct 6 ms 3336 KB Output is correct
28 Correct 15 ms 4012 KB Output is correct
29 Correct 33 ms 5500 KB Output is correct
30 Correct 11 ms 5500 KB Output is correct
31 Correct 21 ms 5500 KB Output is correct
32 Correct 15 ms 5500 KB Output is correct
33 Correct 61 ms 8004 KB Output is correct
34 Correct 36 ms 8004 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 8004 KB Output is correct
2 Correct 3 ms 8004 KB Output is correct
3 Correct 3 ms 8004 KB Output is correct
4 Correct 4 ms 8004 KB Output is correct
5 Correct 3 ms 8004 KB Output is correct
6 Correct 4 ms 8004 KB Output is correct
7 Correct 4 ms 8004 KB Output is correct
8 Correct 4 ms 8004 KB Output is correct
9 Correct 4 ms 8004 KB Output is correct
10 Correct 4 ms 8004 KB Output is correct
11 Correct 4 ms 8004 KB Output is correct
12 Correct 4 ms 8004 KB Output is correct
13 Correct 4 ms 8004 KB Output is correct
14 Correct 7 ms 8004 KB Output is correct
15 Correct 5 ms 8004 KB Output is correct
16 Correct 4 ms 8004 KB Output is correct
17 Correct 6 ms 8004 KB Output is correct
18 Correct 5 ms 8004 KB Output is correct
19 Correct 4 ms 8004 KB Output is correct
20 Correct 7 ms 8004 KB Output is correct
21 Correct 4 ms 8004 KB Output is correct
22 Correct 4 ms 8004 KB Output is correct
23 Correct 10 ms 8004 KB Output is correct
24 Correct 8 ms 8004 KB Output is correct
25 Correct 6 ms 8004 KB Output is correct
26 Correct 6 ms 8004 KB Output is correct
27 Correct 9 ms 8004 KB Output is correct
28 Correct 14 ms 8004 KB Output is correct
29 Correct 34 ms 8004 KB Output is correct
30 Correct 11 ms 8004 KB Output is correct
31 Correct 22 ms 8004 KB Output is correct
32 Correct 17 ms 8004 KB Output is correct
33 Correct 79 ms 8088 KB Output is correct
34 Correct 48 ms 8088 KB Output is correct
35 Correct 45 ms 8088 KB Output is correct
36 Correct 6 ms 8088 KB Output is correct
37 Correct 23 ms 8088 KB Output is correct
38 Correct 21 ms 8088 KB Output is correct
39 Correct 13 ms 8088 KB Output is correct
40 Correct 15 ms 8088 KB Output is correct
41 Correct 33 ms 8088 KB Output is correct
42 Correct 11 ms 8088 KB Output is correct
43 Correct 11 ms 8088 KB Output is correct
44 Correct 12 ms 8088 KB Output is correct
45 Correct 370 ms 23720 KB Output is correct
46 Correct 176 ms 23720 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 23720 KB Output is correct
2 Correct 4 ms 23720 KB Output is correct
3 Correct 4 ms 23720 KB Output is correct
4 Correct 5 ms 23720 KB Output is correct
5 Correct 4 ms 23720 KB Output is correct
6 Correct 4 ms 23720 KB Output is correct
7 Correct 5 ms 23720 KB Output is correct
8 Correct 4 ms 23720 KB Output is correct
9 Correct 5 ms 23720 KB Output is correct
10 Correct 5 ms 23720 KB Output is correct
11 Correct 5 ms 23720 KB Output is correct
12 Correct 4 ms 23720 KB Output is correct
13 Correct 5 ms 23720 KB Output is correct
14 Correct 8 ms 23720 KB Output is correct
15 Correct 7 ms 23720 KB Output is correct
16 Correct 6 ms 23720 KB Output is correct
17 Correct 7 ms 23720 KB Output is correct
18 Correct 4 ms 23720 KB Output is correct
19 Correct 4 ms 23720 KB Output is correct
20 Correct 5 ms 23720 KB Output is correct
21 Correct 5 ms 23720 KB Output is correct
22 Correct 4 ms 23720 KB Output is correct
23 Correct 7 ms 23720 KB Output is correct
24 Correct 9 ms 23720 KB Output is correct
25 Correct 5 ms 23720 KB Output is correct
26 Correct 6 ms 23720 KB Output is correct
27 Correct 6 ms 23720 KB Output is correct
28 Correct 14 ms 23720 KB Output is correct
29 Correct 43 ms 23720 KB Output is correct
30 Correct 13 ms 23720 KB Output is correct
31 Correct 24 ms 23720 KB Output is correct
32 Correct 17 ms 23720 KB Output is correct
33 Correct 74 ms 23720 KB Output is correct
34 Correct 42 ms 23720 KB Output is correct
35 Correct 37 ms 23720 KB Output is correct
36 Correct 6 ms 23720 KB Output is correct
37 Correct 23 ms 23720 KB Output is correct
38 Correct 24 ms 23720 KB Output is correct
39 Correct 13 ms 23720 KB Output is correct
40 Correct 16 ms 23720 KB Output is correct
41 Correct 42 ms 23720 KB Output is correct
42 Correct 14 ms 23720 KB Output is correct
43 Correct 16 ms 23720 KB Output is correct
44 Correct 12 ms 23720 KB Output is correct
45 Correct 525 ms 23788 KB Output is correct
46 Correct 240 ms 23788 KB Output is correct
47 Correct 30 ms 23788 KB Output is correct
48 Correct 13 ms 23788 KB Output is correct
49 Correct 12 ms 23788 KB Output is correct
50 Correct 10 ms 23788 KB Output is correct
51 Correct 51 ms 23788 KB Output is correct
52 Correct 61 ms 23788 KB Output is correct
53 Correct 20 ms 23788 KB Output is correct
54 Correct 12 ms 23788 KB Output is correct
55 Correct 17 ms 23788 KB Output is correct
56 Correct 36 ms 23788 KB Output is correct
57 Correct 8 ms 23788 KB Output is correct
58 Correct 73 ms 23788 KB Output is correct
59 Correct 42 ms 23788 KB Output is correct
60 Correct 64 ms 23788 KB Output is correct
61 Correct 38 ms 23788 KB Output is correct
62 Correct 432 ms 28608 KB Output is correct
63 Execution timed out 1088 ms 43016 KB Time limit exceeded
64 Halted 0 ms 0 KB -