Submission #1275787

#TimeUsernameProblemLanguageResultExecution timeMemory
1275787benyJakarta Skyscrapers (APIO15_skyscraper)C++20
57 / 100
1053 ms94596 KiB
#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; #pragma GCC optimize("O3") #pragma GCC optimization("Ofast,unroll-loops") #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt") #define ll long long //#define smid (nl + nr) / 2 //#define lc id * 2 //#define rc id * 2 + 1 #define migmig std::ios_base::sync_with_stdio(false);std::cin.tie(NULL);std::cout.tie(NULL); template <class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>; const int N = 30005; bitset<N>mark[N]; vector<int> doge[N]; void solve() { int n, m; scanf("%d%d", &n, &m); int b0, p0, b1, p1; for (int i = 0; i < m; i++) { int b, p; scanf("%d%d", &b, &p); doge[b].push_back(p); if (i == 1) { b1 = b; p1 = p; } if (i == 0) { b0 = b; p0 = p; } } for (int i = 0; i <= n; i++) { for (int j = 0; j <= 30000; j++) { mark[i][j] = 0; } } deque<array<int, 3>> q; q.push_back({ 0, b0, p0 }); mark[b0][p0] = 1; while (!q.empty()) { int d = q.front()[0]; int v = q.front()[1]; int p = q.front()[2]; q.pop_front(); if (v == b1) { printf("%d", d); return; } if (v - p >= 0) { if (!mark[v - p][p]) { q.push_back({ d + 1, v - p, p }); mark[v - p][p] = 1; } } if (v + p < n) { if (!mark[v + p][p]) { q.push_back({ d + 1, v + p, p }); mark[v + p][p] = 1; } } for (int pp : doge[v]) { if (!mark[v][pp]) { q.push_front({ d, v, pp }); mark[v][pp] = 1; } } doge[v].clear(); } printf("-1"); } int main() { migmig; int T = 1; //cin >> T; while (T--) { solve(); } }

Compilation message (stderr)

skyscraper.cpp: In function 'void solve()':
skyscraper.cpp:25:20: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |     int n, m; scanf("%d%d", &n, &m);
      |               ~~~~~^~~~~~~~~~~~~~~~
skyscraper.cpp:29:24: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |         int b, p; scanf("%d%d", &b, &p);
      |                   ~~~~~^~~~~~~~~~~~~~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...