oj.uz

답안 #699239

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
699239 2023-02-16T08:41:12 Z nguyentunglam Jakarta Skyscrapers (APIO15_skyscraper) C++17
0 / 100
 1 ms 1036 KB 
#include<bits/stdc++.h>
#define fi first
#define se second
#define endl "\n"
#define ii pair<int, int>
using namespace std;
const int N = 3e4 + 10, M = 8e6 + 10;
map<pair<int, int>, int> dd;
vector<int> lst[N];
int d[M];
int cnt;
bool mark[N];
int id(int x, int y) {
    if (!dd[{x, y}]) dd[{x, y}] = ++cnt;
    return dd[{x, y}];
}
int main() {
    #define task ""
    cin.tie(0) -> sync_with_stdio(0);
    if (fopen ("task.inp", "r")) {
        freopen ("task.inp", "r", stdin);
        freopen ("task.out", "w", stdout);
    }
    if (fopen (task".inp", "r")) {
        freopen (task".inp", "r", stdin);
        freopen (task".out", "w", stdout);
    }
    int n, m; cin >> n >> m;
    while (m--) {
        int b, p; cin >> b >> p;
        lst[b].push_back(p);
    }
    deque<pair<int, int> > dq;
    for(int &j : lst[0]) {
        int code = id(0, j);
        if (!d[code]) {
            d[code] = 1;
            dq.push_back({0, j});
        }
    }
    mark[0] = 1;

    while (!dq.empty()) {
        auto [pos, jump] = dq.front(); dq.pop_front();
        int cur = id(pos, jump);
        if (pos == 1) return cout << d[cur] - 1, 0;
        if (!mark[pos]) {
            for(auto &j : lst[pos]) {
                int code = id(pos, j);
                if (!d[code]) d[code] = d[cur], dq.push_front({pos, j});
            }
            mark[pos] = 1;
        }
        if (pos + jump < n) {
            int code = id(pos + jump, jump);
            if (!d[code]) d[code] = d[cur] + 1, dq.push_back({pos + jump, jump});
        }
        if (pos - jump >= 0) {
            int code = id(pos - jump, jump);
            if (!d[code]) d[code] = d[cur] + 1, dq.push_back({pos - jump, jump});
        }
    }
    cout << -1;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:21:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         freopen ("task.inp", "r", stdin);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
skyscraper.cpp:22:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         freopen ("task.out", "w", stdout);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
skyscraper.cpp:25:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |         freopen (task".inp", "r", stdin);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
skyscraper.cpp:26:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         freopen (task".out", "w", stdout);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Incorrect 1 ms 980 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Incorrect 1 ms 980 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1036 KB Output is correct
2 Incorrect 1 ms 1036 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Incorrect 1 ms 1036 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 980 KB Output is correct
2 Incorrect 1 ms 980 KB Output isn't correct
3 Halted 0 ms 0 KB -