Submission #491628

#TimeUsernameProblemLanguageResultExecution timeMemory
491628acmWeighting stones (IZhO11_stones)C++14
0 / 100
1087 ms3160 KiB
#ifdef ONLINE_JUDGE #pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") #endif #include <bits/stdc++.h> #define speed \ ios_base::sync_with_stdio(0); \ cin.tie(0); \ cout.tie(0); #define precision \ cout.precision(30); \ cerr.precision(10); #define ll long long #define ld long double #define pb(x) push_back(x) #define sz(x) (int)x.size() #define mp(x, y) make_pair(x, y) #define all(x) x.begin(), x.end() #define pc(x) __builtin_popcount(x) #define pcll(x) __builtin_popcountll(x) #define F first #define S second using namespace std; mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count()); void ioi(string name) { freopen((name + ".in").c_str(), "r", stdin); freopen((name + ".out").c_str(), "w", stdout); } int q, n, m, h[100005]; set<int> a, b, A, B; void lol() { while (sz(A) && sz(B)) { int v = *prev(A.end()); a.insert(v); A.erase(v); h[v]++; v = *prev(B.end()); b.insert(v); B.erase(v); h[v]--; } } void add(int x) { n++; A.insert(x); lol(); while (sz(a) && sz(A) && (*a.begin() < *prev(A.end()))) { int v = *a.begin(); a.erase(v); A.insert(v); h[v]--; v = *prev(A.end()); a.insert(v); A.erase(v); h[v]++; } } void dda(int x) { m++; B.insert(x); lol(); while (sz(b) && sz(B) && (*b.begin() < *prev(B.end()))) { int v = *b.begin(); b.erase(v); B.insert(v); h[v]++; v = *prev(B.end()); b.insert(v); B.erase(v); h[v]--; } } int get() { int x = 1, y = 1, s = 0; for (int i = q; i >= 1; i--) { s += h[i]; x &= (0 <= s); y &= (s <= 0); if (!x && !y) break; } if (!x && !y) return -1; if (x && y) return n > m; if (x && n != max(n, m)) return -1; if (y && m != max(n, m)) return -1; return x; } int main() { speed; precision; // code cin >> q; for (int i = 1; i <= q; i++) { int x, y; cin >> x >> y; if (y < 2) add(x); else dda(x); x = get(); if (x < 0) cout << "?\n"; else cout << (x ? ">\n" : "<\n"); } // endl #ifndef ONLINE_JUDGE cerr << "\nTime elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n"; #endif return 0; }

Compilation message (stderr)

stones.cpp: In function 'void ioi(std::string)':
stones.cpp:26:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |   freopen((name + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stones.cpp:27:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   freopen((name + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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