// #pragma GCC optimize("O3") #include <bits/stdc++.h> using namespace std; using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>; using pii = pair<int, int>; using vii = vector<pii>; using vvii = vector<vii>; using l = long long; using vl = vector<l>; using vvl = vector<vl>; using vvvl = vector<vvl>; using pll = pair<l, l>; using vll = vector<pll>; using vvll = vector<vll>; using d = double; using vd = vector<d>; using vvd = vector<vd>; using vvvd = vector<vvd>; using ld = long double; using vld = vector<ld>; using vvld = vector<vld>; using vvvld = vector<vvld>; using vb = vector<bool>; using vvb = vector<vb>; using pbb = pair<bool, bool>; using vbb = vector<pbb>; #define ff first #define ss second #define pb push_back #define eb emplace_back #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() #define sz(x) (int)(x).size() void setIO(string name = "") { ios_base::sync_with_stdio(0); cin.tie(0); if (!name.empty()) { (void)freopen((name + ".in").c_str(), "r", stdin); (void)freopen((name + ".out").c_str(), "w", stdout); } } const ld pi = 3.14159265358979323846; const l LINF = 4e18; const l INF = 1e9; const l MOD = 1e9 + 7; // const l MOD = 998244353; const l MAXN = 2e5 + 5; void solve() { int n; cin >> n; vll p(n); for (int i = 0; i < n; ++i) { l x, y; cin >> x >> y; p[i] = {abs(x), abs(y)}; } sort(all(p)); vl dp(n + 2, LINF); dp[n] = 0; for (int i = n; i >= 0; --i) { l maxY = 0; for (int j = i; j < n; ++j) { maxY = max(maxY, p[j].second); l cost = 2 * p[j].first * 2 * maxY; dp[i] = min(dp[i], cost + dp[j + 1]); } } cout << dp[0]; } int main() { setIO(""); #ifndef ONLINE_JUDGE // setIO("filename"); #endif int t = 1; // cin >> t; while (t--) solve(); return 0; }

cover.cpp: In function 'void setIO(std::string)':
cover.cpp:53:22: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |         (void)freopen((name + ".in").c_str(), "r", stdin);
      |               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cover.cpp:54:22: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |         (void)freopen((name + ".out").c_str(), "w", stdout);
      |               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~