Submission #1199190

#TimeUsernameProblemLanguageResultExecution timeMemory
1199190InvMODPinball (JOI14_pinball)C++17
0 / 100
0 ms320 KiB
#include<bits/stdc++.h> using namespace std; #define fi first #define se second #define pb push_back #define eb emplace_back #define vi vector<int> #define pi pair<int,int> #define sz(v) (int)(v).size() #define all(v) (v).begin(), (v).end() #define compact(v) (v).erase(unique(all(v)), (v).end()) template<class T> using upq = priority_queue<T, vector<T>, greater<T>>; template<class T> int lwrbound(const vector<T>& a, const T& b, const int s = 0){return int(lower_bound(s + all(a), b) - a.begin());} template<class T> int uprbound(const vector<T>& a, const T& b, const int s = 0){return int(upper_bound(s + all(a), b) - a.begin());} #define FOR(i, a, b) for(int i = (a); i <= (b); i++) #define ROF(i, a, b) for(int i = (a); i >= (b); i--) #define sumof(x) accumulate(all(x), 0ll) #define dbg(x) "[" << #x " = " << (x) << "]" #define el "\n" using ll = long long; using ld = long double; template<class T> bool ckmx(T& a, const T b){return (b > a ? a = b, true : false);} template<class T> bool ckmn(T& a, const T b){return (b < a ? a = b, true : false);} const int N = 2e5 + 5, INF = 2e9; const ll MAX_DP = 1e16; struct Node{ int l, r; ll dp; Node(int l = INF, int r = -INF, ll dp = MAX_DP): l(l), r(r), dp(dp) {} bool operator < (const Node& q) const{ return make_pair(l, dp) < make_pair(q.l, q.dp); } bool operator > (const Node& q) const{ return make_pair(r, -dp) > make_pair(q.r, -q.dp); } }; struct SegTree{ vector<Node> st[2]; int trsz; SegTree(int n = 0): trsz(n) { st[0].resize((n << 2) | 1); st[1].resize((n << 2) | 1); } void update(int id, int l, int r, int x, Node dpL, Node dpR){ if(l == r){ ckmn(st[0][id], dpL); ckmx(st[1][id], dpR); } else{ int m = l+r>>1; if(x <= m) update(id << 1, l, m, x, dpL, dpR); else update(id << 1|1, m+1, r, x, dpL, dpR); ckmn(st[0][id], dpL); ckmx(st[1][id], dpR); } } Node query(int id, int l, int r, int u, int v, int t){ if(l > v || r < u) return Node(); if(l >= u && r <= v) return st[t][id]; int m = l+r>>1; Node ans = Node(); if(!t) ckmn(ans, query(id << 1, l, m, u, v, t)), ckmn(ans, query(id << 1|1, m+1, r, u, v, t)); else ckmx(ans, query(id << 1, l, m, u, v, t)), ckmx(ans, query(id << 1|1, m+1, r, u, v, t)); return ans; } void update(int x, Node dpL, Node dpR){ update(1, 1, trsz, x, dpL, dpR); } Node query(int l, int r, int t){ return query(1, 1, trsz, l, r, t); } }; int n, m, L[N], R[N], c[N], W[N]; void Main() { cin >> n >> m; FOR(i, 1, n) cin >> L[i] >> R[i] >> c[i] >> W[i]; vi comp(1, -1); FOR(i, 1, n){ comp.eb(L[i]), comp.eb(R[i]), comp.eb(c[i]); } sort(all(comp)), compact(comp); FOR(i, 1, n){ L[i] = lwrbound(comp, L[i]); R[i] = lwrbound(comp, R[i]); c[i] = lwrbound(comp, c[i]); } SegTree tr(sz(comp)); ll ans = MAX_DP; FOR(i, 1, n){ Node curdp1 = tr.query(L[i], R[i], 0); Node curdp2 = tr.query(L[i], R[i], 1); Node curdpi = Node(L[i], R[i], 0); ckmn(curdp1, curdpi), ckmx(curdp2, curdpi); if(curdp1.l == 1 && curdp2.r == m){ ckmn(ans, curdp1.dp + curdp2.dp + W[i]); } curdp1.dp += W[i], curdp2.dp += W[i]; tr.update(c[i], curdp1, curdp2); } cout << (ans == MAX_DP ? -1 : ans) << el; } int32_t main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); #define name "InvMOD" if(fopen(name".INP", "r")){ freopen(name".INP", "r", stdin); freopen(name".OUT", "w", stdout); } int t = 1; while(t--) Main(); return 0; }

Compilation message (stderr)

pinball.cpp: In function 'int32_t main()':
pinball.cpp:140:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  140 |         freopen(name".INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
pinball.cpp:141:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  141 |         freopen(name".OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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