oj.uz

Submission #54674

# Submission time Handle Problem Language Result Execution time Memory
54674 2018-07-04T11:59:54 Z aquablitz11 Jakarta Skyscrapers (APIO15_skyscraper) C++14
57 / 100
 39 ms 17196 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 = 2010;
const int M = 30010;
const int INF = 1e9;
 
vector<int> li[N];
int dist[N][N];
 
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;
    }
    forn(i, n) forn(j, n) dist[i][j] = INF;
 
    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:137:9: 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 2 ms 376 KB Output is correct
2 Correct 2 ms 536 KB Output is correct
3 Correct 2 ms 536 KB Output is correct
4 Correct 2 ms 536 KB Output is correct
5 Correct 2 ms 536 KB Output is correct
6 Correct 2 ms 536 KB Output is correct
7 Correct 2 ms 536 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 536 KB Output is correct
2 Correct 2 ms 536 KB Output is correct
3 Correct 2 ms 536 KB Output is correct
4 Correct 2 ms 536 KB Output is correct
5 Correct 2 ms 536 KB Output is correct
6 Correct 3 ms 648 KB Output is correct
7 Correct 2 ms 648 KB Output is correct
8 Correct 2 ms 696 KB Output is correct
9 Correct 2 ms 852 KB Output is correct
10 Correct 2 ms 1108 KB Output is correct
11 Correct 2 ms 1108 KB Output is correct
12 Correct 4 ms 1108 KB Output is correct
13 Correct 3 ms 1108 KB Output is correct
14 Correct 3 ms 1108 KB Output is correct
15 Correct 2 ms 1108 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1108 KB Output is correct
2 Correct 3 ms 1108 KB Output is correct
3 Correct 2 ms 1108 KB Output is correct
4 Correct 2 ms 1108 KB Output is correct
5 Correct 2 ms 1108 KB Output is correct
6 Correct 2 ms 1108 KB Output is correct
7 Correct 2 ms 1108 KB Output is correct
8 Correct 2 ms 1108 KB Output is correct
9 Correct 2 ms 1108 KB Output is correct
10 Correct 3 ms 1108 KB Output is correct
11 Correct 3 ms 1124 KB Output is correct
12 Correct 4 ms 1124 KB Output is correct
13 Correct 3 ms 1124 KB Output is correct
14 Correct 3 ms 1124 KB Output is correct
15 Correct 3 ms 1124 KB Output is correct
16 Correct 3 ms 1508 KB Output is correct
17 Correct 6 ms 5732 KB Output is correct
18 Correct 14 ms 14340 KB Output is correct
19 Correct 18 ms 16356 KB Output is correct
20 Correct 14 ms 16356 KB Output is correct
21 Correct 4 ms 16356 KB Output is correct
22 Correct 13 ms 16356 KB Output is correct
23 Correct 12 ms 16356 KB Output is correct
24 Correct 16 ms 16356 KB Output is correct
25 Correct 16 ms 16356 KB Output is correct
26 Correct 15 ms 16484 KB Output is correct
27 Correct 15 ms 16484 KB Output is correct
28 Correct 17 ms 16484 KB Output is correct
29 Correct 16 ms 16484 KB Output is correct
30 Correct 15 ms 16484 KB Output is correct
31 Correct 14 ms 16484 KB Output is correct
32 Correct 15 ms 16484 KB Output is correct
33 Correct 19 ms 16484 KB Output is correct
34 Correct 17 ms 16484 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 16484 KB Output is correct
2 Correct 2 ms 16484 KB Output is correct
3 Correct 2 ms 16484 KB Output is correct
4 Correct 2 ms 16484 KB Output is correct
5 Correct 3 ms 16484 KB Output is correct
6 Correct 2 ms 16484 KB Output is correct
7 Correct 2 ms 16484 KB Output is correct
8 Correct 3 ms 16484 KB Output is correct
9 Correct 3 ms 16484 KB Output is correct
10 Correct 3 ms 16484 KB Output is correct
11 Correct 3 ms 16484 KB Output is correct
12 Correct 4 ms 16484 KB Output is correct
13 Correct 3 ms 16484 KB Output is correct
14 Correct 4 ms 16484 KB Output is correct
15 Correct 4 ms 16484 KB Output is correct
16 Correct 4 ms 16484 KB Output is correct
17 Correct 8 ms 16484 KB Output is correct
18 Correct 17 ms 16484 KB Output is correct
19 Correct 17 ms 16484 KB Output is correct
20 Correct 16 ms 16484 KB Output is correct
21 Correct 4 ms 16484 KB Output is correct
22 Correct 14 ms 16484 KB Output is correct
23 Correct 15 ms 16484 KB Output is correct
24 Correct 19 ms 16484 KB Output is correct
25 Correct 17 ms 16484 KB Output is correct
26 Correct 16 ms 16484 KB Output is correct
27 Correct 17 ms 16484 KB Output is correct
28 Correct 20 ms 16484 KB Output is correct
29 Correct 16 ms 16484 KB Output is correct
30 Correct 15 ms 16484 KB Output is correct
31 Correct 16 ms 16484 KB Output is correct
32 Correct 16 ms 16484 KB Output is correct
33 Correct 20 ms 16484 KB Output is correct
34 Correct 22 ms 16484 KB Output is correct
35 Correct 33 ms 16484 KB Output is correct
36 Correct 11 ms 16484 KB Output is correct
37 Correct 27 ms 16484 KB Output is correct
38 Correct 29 ms 16620 KB Output is correct
39 Correct 24 ms 16620 KB Output is correct
40 Correct 36 ms 16724 KB Output is correct
41 Correct 29 ms 16748 KB Output is correct
42 Correct 30 ms 16748 KB Output is correct
43 Correct 21 ms 16876 KB Output is correct
44 Correct 21 ms 16876 KB Output is correct
45 Correct 39 ms 16876 KB Output is correct
46 Correct 30 ms 17020 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 17020 KB Output is correct
2 Correct 2 ms 17020 KB Output is correct
3 Correct 2 ms 17020 KB Output is correct
4 Correct 3 ms 17020 KB Output is correct
5 Correct 2 ms 17020 KB Output is correct
6 Correct 2 ms 17020 KB Output is correct
7 Correct 3 ms 17020 KB Output is correct
8 Correct 4 ms 17020 KB Output is correct
9 Correct 2 ms 17020 KB Output is correct
10 Correct 3 ms 17020 KB Output is correct
11 Correct 5 ms 17020 KB Output is correct
12 Correct 3 ms 17020 KB Output is correct
13 Correct 3 ms 17020 KB Output is correct
14 Correct 4 ms 17020 KB Output is correct
15 Correct 4 ms 17020 KB Output is correct
16 Correct 3 ms 17020 KB Output is correct
17 Correct 7 ms 17020 KB Output is correct
18 Correct 13 ms 17020 KB Output is correct
19 Correct 15 ms 17020 KB Output is correct
20 Correct 15 ms 17020 KB Output is correct
21 Correct 4 ms 17020 KB Output is correct
22 Correct 14 ms 17020 KB Output is correct
23 Correct 14 ms 17020 KB Output is correct
24 Correct 17 ms 17020 KB Output is correct
25 Correct 16 ms 17020 KB Output is correct
26 Correct 16 ms 17020 KB Output is correct
27 Correct 16 ms 17020 KB Output is correct
28 Correct 16 ms 17020 KB Output is correct
29 Correct 18 ms 17020 KB Output is correct
30 Correct 16 ms 17020 KB Output is correct
31 Correct 19 ms 17020 KB Output is correct
32 Correct 15 ms 17020 KB Output is correct
33 Correct 18 ms 17020 KB Output is correct
34 Correct 17 ms 17020 KB Output is correct
35 Correct 23 ms 17020 KB Output is correct
36 Correct 10 ms 17020 KB Output is correct
37 Correct 22 ms 17020 KB Output is correct
38 Correct 23 ms 17020 KB Output is correct
39 Correct 27 ms 17020 KB Output is correct
40 Correct 24 ms 17020 KB Output is correct
41 Correct 26 ms 17020 KB Output is correct
42 Correct 19 ms 17020 KB Output is correct
43 Correct 20 ms 17020 KB Output is correct
44 Correct 20 ms 17020 KB Output is correct
45 Correct 32 ms 17020 KB Output is correct
46 Correct 28 ms 17196 KB Output is correct
47 Runtime error 2 ms 17196 KB Execution killed with signal 11 (could be triggered by violating memory limits)
48 Halted 0 ms 0 KB -