제출 #914059

#제출 시각아이디문제언어결과실행 시간메모리
914059cig32Railway Trip 2 (JOI22_ho_t4)C++17
컴파일 에러
0 ms0 KiB
#include "bits/stdc++.h" using namespace std; //#define int long long #define double long double const int MAXN = 2e5 + 10; const int MOD = 1e9 + 7; mt19937_64 rng((int)std::chrono::steady_clock::now().time_since_epoch().count()); int rnd(int x, int y) { int u = uniform_int_distribution<int>(x, y)(rng); return u; } int bm(int b, int p) { if(p==0) return 1 % MOD; int r = bm(b, p >> 1); if(p&1) return (((r*r) % MOD) * b) % MOD; return (r*r) % MOD; } int inv(int b) { return bm(b, MOD-2); } int fastlog(int x) { return (x == 0 ? -1 : 64 - __builtin_clzll(x) - 1); } void printcase(int i) { cout << "Case #" << i << ": "; } static void run_with_stack_size(void (*func)(void), size_t stsize) { char *stack, *send; stack = (char *)malloc(stsize); send = stack + stsize - 16; send = (char *)((uintptr_t)send / 16 * 16); asm volatile( "mov %%rsp, (%0)\n" "mov %0, %%rsp\n" : : "r"(send)); func(); asm volatile("mov (%0), %%rsp\n" : : "r"(send)); free(stack); } struct segtree_basic { struct node { int lazyval, mi, ma, sum; char lazytag; int len; // not changing }; int stok; vector<node> st; void bu(int l, int r, int idx) { st[idx].lazyval = st[idx].mi = st[idx].ma = st[idx].sum = 0; st[idx].lazytag = '?'; st[idx].len = r - l + 1; if(l == r) { return; } int mid = (l + r) >> 1; bu(l, mid, 2*idx+1); bu(mid+1, r, 2*idx+2); } void push_down(int idx) { if(st[idx].lazytag == '?') return; if(st[idx].lazytag == ':') { st[2*idx+1].lazyval = st[idx].lazyval; st[2*idx+1].mi = st[idx].lazyval; st[2*idx+1].ma = st[idx].lazyval; st[2*idx+1].sum = st[idx].lazyval * st[2*idx+1].len; st[2*idx+1].lazytag = ':'; st[2*idx+2].lazyval = st[idx].lazyval; st[2*idx+2].mi = st[idx].lazyval; st[2*idx+2].ma = st[idx].lazyval; st[2*idx+2].sum = st[idx].lazyval * st[2*idx+2].len; st[2*idx+2].lazytag = ':'; } else { st[2*idx+1].lazyval += st[idx].lazyval; st[2*idx+1].mi += st[idx].lazyval; st[2*idx+1].ma += st[idx].lazyval; st[2*idx+1].sum += st[idx].lazyval * st[2*idx+1].len; st[2*idx+1].lazytag = (st[2*idx+1].lazytag == ':' ? ':' : '+'); st[2*idx+2].lazyval += st[idx].lazyval; st[2*idx+2].mi += st[idx].lazyval; st[2*idx+2].ma += st[idx].lazyval; st[2*idx+2].sum += st[idx].lazyval * st[2*idx+2].len; st[2*idx+2].lazytag = (st[2*idx+2].lazytag == ':' ? ':' : '+'); } st[idx].lazytag = '?'; st[idx].lazyval = 0; } void push_up(int idx) { st[idx].mi = min(st[2*idx+1].mi, st[2*idx+2].mi); st[idx].ma = max(st[2*idx+1].ma, st[2*idx+2].ma); st[idx].sum = st[2*idx+1].sum + st[2*idx+2].sum; } void u1(int l, int r, int constl, int constr, int idx, int val) { // range := v if(l <= constl && constr <= r) { st[idx].lazyval = val; st[idx].mi = val; st[idx].ma = val; st[idx].sum = val * st[idx].len; st[idx].lazytag = ':'; return; } int mid = (constl + constr) >> 1; push_down(idx); if(mid < l || r < constl) u1(l, r, mid+1, constr, 2*idx+2, val); else if(constr < l || r < mid + 1) u1(l, r, constl, mid, 2*idx+1, val); else { u1(l, r, constl, mid, 2*idx+1, val); u1(l, r, mid+1, constr, 2*idx+2, val); } push_up(idx); } void u2(int l, int r, int constl, int constr, int idx, int val) { // range += v if(l <= constl && constr <= r) { st[idx].lazyval += val; st[idx].mi += val; st[idx].ma += val; st[idx].sum += val * st[idx].len; st[idx].lazytag = (st[idx].lazytag == ':' ? ':' : '+'); return; } int mid = (constl + constr) >> 1; push_down(idx); if(mid < l || r < constl) u2(l, r, mid+1, constr, 2*idx+2, val); else if(constr < l || r < mid + 1) u2(l, r, constl, mid, 2*idx+1, val); else { u2(l, r, constl, mid, 2*idx+1, val); u2(l, r, mid+1, constr, 2*idx+2, val); } push_up(idx); } int qu1(int l, int r, int constl, int constr, int idx) { // range min if(l <= constl && constr <= r) return st[idx].mi; int mid = (constl + constr) >> 1; push_down(idx); if(mid < l || r < constl) return qu1(l, r, mid+1, constr, 2*idx+2); else if(constr < l || r < mid + 1) return qu1(l, r, constl, mid, 2*idx+1); else { return min(qu1(l, r, constl, mid, 2*idx+1), qu1(l, r, mid+1, constr, 2*idx+2)); } } int qu2(int l, int r, int constl, int constr, int idx) { // range max if(l <= constl && constr <= r) return st[idx].ma; int mid = (constl + constr) >> 1; push_down(idx); if(mid < l || r < constl) return qu2(l, r, mid+1, constr, 2*idx+2); else if(constr < l || r < mid + 1) return qu2(l, r, constl, mid, 2*idx+1); else { return max(qu2(l, r, constl, mid, 2*idx+1), qu2(l, r, mid+1, constr, 2*idx+2)); } } int qu3(int l, int r, int constl, int constr, int idx) { // range sum if(l <= constl && constr <= r) return st[idx].sum; int mid = (constl + constr) >> 1; push_down(idx); if(mid < l || r < constl) return qu3(l, r, mid+1, constr, 2*idx+2); else if(constr < l || r < mid + 1) return qu3(l, r, constl, mid, 2*idx+1); else { return qu3(l, r, constl, mid, 2*idx+1) + qu3(l, r, mid+1, constr, 2*idx+2); } } int qu4(int l, int r, int constl, int constr, int idx, int val) { // first at least v if(l <= constl && constr <= r) { if(st[idx].ma < val) return -1; while(constl < constr) { int mid = (constl + constr) >> 1; push_down(idx); if(st[2*idx+1].ma >= val) constr = mid, idx = 2*idx + 1; else constl = mid+1, idx = 2*idx + 2; } return constl; } int mid = (constl + constr) >> 1; push_down(idx); if(mid < l || r < constl) return qu4(l, r, mid+1, constr, 2*idx+2, val); else if(constr < l || r < mid + 1) return qu4(l, r, constl, mid, 2*idx+1, val); else { int lchild = qu4(l, r, constl, mid, 2*idx+1, val); if(lchild != -1) return lchild; return qu4(l, r, mid+1, constr, 2*idx+2, val); } } int qu5(int l, int r, int constl, int constr, int idx, int val) { // first at most v if(l <= constl && constr <= r) { if(st[idx].mi > val) return -1; while(constl < constr) { int mid = (constl + constr) >> 1; push_down(idx); if(st[2*idx+1].mi <= val) constr = mid, idx = 2*idx + 1; else constl = mid+1, idx = 2*idx + 2; } return constl; } int mid = (constl + constr) >> 1; push_down(idx); if(mid < l || r < constl) return qu5(l, r, mid+1, constr, 2*idx+2, val); else if(constr < l || r < mid + 1) return qu5(l, r, constl, mid, 2*idx+1, val); else { int lchild = qu5(l, r, constl, mid, 2*idx+1, val); if(lchild != -1) return lchild; return qu5(l, r, mid+1, constr, 2*idx+2, val); } } int qu6(int l, int r, int constl, int constr, int idx, int val) { // last at least v if(l <= constl && constr <= r) { if(st[idx].ma < val) return -1; while(constl < constr) { int mid = (constl + constr) >> 1; push_down(idx); if(st[2*idx+2].ma >= val) constl = mid+1, idx = 2*idx + 2; else constr = mid, idx = 2*idx + 1; } return constl; } int mid = (constl + constr) >> 1; push_down(idx); if(mid < l || r < constl) return qu6(l, r, mid+1, constr, 2*idx+2, val); else if(constr < l || r < mid + 1) return qu6(l, r, constl, mid, 2*idx+1, val); else { int rchild = qu6(l, r, mid+1, constr, 2*idx+2, val); if(rchild != -1) return rchild; return qu6(l, r, constl, mid, 2*idx+1, val); } } int qu7(int l, int r, int constl, int constr, int idx, int val) { // last at most v if(l <= constl && constr <= r) { if(st[idx].mi > val) return -1; while(constl < constr) { int mid = (constl + constr) >> 1; push_down(idx); if(st[2*idx+2].mi <= val) constl = mid+1, idx = 2*idx + 2; else constr = mid, idx = 2*idx + 1; } return constl; } int mid = (constl + constr) >> 1; push_down(idx); if(mid < l || r < constl) return qu7(l, r, mid+1, constr, 2*idx+2, val); else if(constr < l || r < mid + 1) return qu7(l, r, constl, mid, 2*idx+1, val); else { int rchild = qu7(l, r, mid+1, constr, 2*idx+2, val); if(rchild != -1) return rchild; return qu7(l, r, constl, mid, 2*idx+1, val); } } public: void resize(int k) { st.resize(4*k + 10); stok = k; bu(0, k, 0); } void range_assign(int l, int r, int v) { u1(l, r, 0, stok, 0, v); } void range_add(int l, int r, int v) { u2(l, r, 0, stok, 0, v); } int query_min(int l, int r) { return qu1(l, r, 0, stok, 0); } int query_max(int l, int r) { return qu2(l, r, 0, stok, 0); } int query_sum(int l, int r) { return qu3(l, r, 0, stok, 0); } int query_firstAtLeast(int l, int r, int v) { return qu4(l, r, 0, stok, 0, v); } int query_firstAtMost(int l, int r, int v) { return qu5(l, r, 0, stok, 0, v); } int query_lastAtLeast(int l, int r, int v) { return qu6(l, r, 0, stok, 0, v); } int query_lastAtMost(int l, int r, int v) { return qu7(l, r, 0, stok, 0, v); } }; struct segtree_small { struct node { int mn = 0, mx = 0; }; vector<node> st; int stok; void u(int l, int r, int tar, int idx, int val) { if(l == r) { st[idx].mn = val; st[idx].mx = val; return; } int mid = (l + r) >> 1; if(tar <= mid) u(l, mid, tar, (idx<<1) + 1, val); else u(mid+1, r, tar, (idx<<1) + 2, val); st[idx].mn = min(st[(idx<<1) + 1].mn, st[(idx<<1) + 2].mn); st[idx].mx = max(st[(idx<<1) + 1].mx, st[(idx<<1) + 2].mx); } int qu1(int l, int r, int constl, int constr, int idx) { if(l <= constl && constr <= r) return st[idx].mn; int mid = (constl + constr) >> 1; if(mid < l || r < constl) return qu1(l, r, mid+1, constr, (idx<<1) + 2); else if(constr < l || r < mid+1) return qu1(l, r, constl, mid, (idx<<1) + 1, val); else return min(qu1(l, r, constl, mid, (idx<<1) + 1), qu1(l, r, mid+1, constr, (idx<<1) + 2)); } int qu2(int l, int r, int constl, int constr, int idx) { if(l <= constl && constr <= r) return st[idx].mx; int mid = (constl + constr) >> 1; if(mid < l || r < constl) return qu2(l, r, mid+1, constr, (idx<<1) + 2); else if(constr < l || r < mid+1) return qu2(l, r, constl, mid, (idx<<1) + 1, val); else return max(qu2(l, r, constl, mid, (idx<<1) + 1), qu2(l, r, mid+1, constr, (idx<<1) + 2)); } public: void resize(int k) { st.resize(4*k + 10); stok = k; } void upd(int i, int v) { u(0, stok, i, 0, v); } int query_min(int l, int r) { return qu1(l, r, 0, stok, 0); } int query_max(int l, int r) { return qu2(l, r, 0, stok, 0); } }; bool cmp(pair<int, int> x, pair<int, int> y) { return x.second < y.second; } void solve(int tc) { int n, k, m; cin >> n >> k >> m; segtree_basic M, P; M.resize(n); P.resize(n); for(int i=1; i<=n; i++) { M.range_add(i, i, i); P.range_add(i, i, i); } vector<pair<int, int>> updates; for(int i=1; i<=m; i++) { int a, b; cin >> a >> b; updates.push_back({a, b}); } sort(updates.begin(), updates.end(), cmp); for(pair<int, int> x: updates) { int a = x.first, b = x.second; if(a > b) continue; int l = a, r = min(b, a + k - 1); M.range_assign(l, r, b); } reverse(updates.begin(), updates.end()); for(pair<int, int> x: updates) { int a = x.first, b = x.second; if(a < b) continue; int l = max(b, a - k + 1), r = a; P.range_assign(l, r, b); } pair<int, int> st[18][n+1]; for(int i=1; i<=n; i++) { int v = M.query_sum(i, i); st[0][i].second = v; v = P.query_sum(i, i); st[0][i].first = v; } segtree_small susopen[18][2]; for(int i=0; i<18; i++) { for(int j=0; j<2; j++) { susopen[i][j].resize(n); } } for(int i=1; i<=n; i++) { susopen[0][0].upd(i, st[0][i].first); susopen[0][1].upd(i, st[0][i].second); } for(int i=1; i<18; i++) { for(int j=1; j<=n; j++) { pair<int, int> bruh = st[i-1][j]; int l = bruh.first, r = bruh.second; int newl = susopen[i-1][0].query_min(l, r); int newr = susopen[i-1][1].query_max(l, r); st[i][j].second = newr; susopen[i][1].upd(j, newr); st[i][j].first = newl; susopen[i][0].upd(j, newl); } } int q; cin >> q; while(q--) { int s, t; cin >> s >> t; if((M.query_max(s, s) >= t && s < t) || (P.query_min(s, s) <= t && s > t)) { cout << "1\n"; continue; } int l = s, r = s, S = 0; for(int i=17; i>=0; i--) { int m1 = susopen[i][0].query_min(l, r); int m2 = susopen[i][1].query_max(l, r); int getl = P.query_min(m1, m2); int getr = M.query_max(m1, m2); if((s < t && getr < t) || (s > t && getl > t)) { S += (1 << i); l = m1; r = m2; } } S++; int m1 = susopen[0][0].query_min(l, r); int m2 = susopen[0][1].query_max(l, r); l = m1; r = m2; int getr = M.query_max(l, r); int getl = P.query_min(l, r); if((s < t && getr < t) || (s > t && getl > t)) S = 1e9; cout << (S >= 1e7 ? -1 : S + 1) << '\n'; } //cout << st[0][9].first << ' ' << st[0][9].second << '\n'; //cout << st[1][9].first << ' ' << st[1][9].second << '\n'; } void uwu() { ios::sync_with_stdio(0); cin.tie(0); int t = 1; //cin >> t; for(int i=1; i<=t; i++) solve(i); } int32_t main() { #ifdef ONLINE_JUDGE uwu(); #endif #ifndef ONLINE_JUDGE run_with_stack_size(uwu, 1024 * 1024 * 1024); // run with a 1 GiB stack #endif } /* g++ A.cpp -std=c++17 -O2 -o A ./A < input.txt */

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In member function 'int segtree_small::qu1(int, int, int, int, int)':
Main.cpp:295:82: error: 'val' was not declared in this scope
  295 |     else if(constr < l || r < mid+1) return qu1(l, r, constl, mid, (idx<<1) + 1, val);
      |                                                                                  ^~~
Main.cpp: In member function 'int segtree_small::qu2(int, int, int, int, int)':
Main.cpp:302:82: error: 'val' was not declared in this scope
  302 |     else if(constr < l || r < mid+1) return qu2(l, r, constl, mid, (idx<<1) + 1, val);
      |                                                                                  ^~~