제출 #1045680

#제출 시각아이디문제언어결과실행 시간메모리
1045680UasoniPyramid Base (IOI08_pyramid_base)C++14
0 / 100
126 ms19288 KiB
#pragma GCC optimize("O3", "unroll-loops") #pragma GCC target("avx", "bmi", "bmi2", "lzcnt", "popcnt") #include<bits/stdc++.h> using namespace std; const int maxn = 4e5+5, maxp = 1e6+5, inf = 1e9; int n, m, p, b; struct R { int x1, y1, x2, y2, c; R() { x1 = y1 = x2 = y2 = c = 0; } } obs[maxn]; struct N { int v, l; } stree[4*maxp]; void push(int i) { if(stree[i].l != 0) { stree[i<<1].v += stree[i].l; stree[i<<1|1].v += stree[i].l; stree[i<<1].l += stree[i].l; stree[i<<1|1].l += stree[i].l; stree[i].l = 0; } } void update(int lq, int rq, int val, int i = 1, int l = 1, int r = maxp) { if(lq <= l && r <= rq) { stree[i].v += val, stree[i].l += val; return; } push(i); int mid = (l+r)/2; if(lq <= mid) update(lq, rq, val, i<<1, l, mid); if(rq >= mid+1) update(lq, rq, val, i<<1|1, mid+1, r); stree[i].v = min(stree[i<<1].v, stree[i<<1|1].v); } int query(int lq, int rq, int i = 1, int l = 1, int r = maxp) { if(lq <= l && r <= rq) return stree[i].v; push(i); int mid = (l+r)/2, ret = inf; if(lq <= mid) ret = min(ret, query(lq, rq, i<<1, l, mid)); if(rq >= mid+1) ret = min(ret, query(lq, rq, i<<1|1, mid+1, r)); return ret; } struct E { int t, val, l, r; bool operator<(const E &o) const { return t < o.t; } }; vector<E> evs; bool check(int x) { bool ret = false; evs.clear(); for(int i = 1; i <= p; i++) { evs.push_back({max(1, obs[i].x1-x+1), obs[i].c, max(1, obs[i].y1-x+1), obs[i].y2}); evs.push_back({obs[i].x2+1, -obs[i].c, max(1, obs[i].y1-x+1), obs[i].y2}); } sort(evs.begin(), evs.end()); for(int i = 0; i < evs.size(); i++) { update(evs[i].l, evs[i].r, evs[i].val); if(i >= evs.size()-1 || evs[i].t != evs[i+1].t) { if(evs[i].t+x-1 <= m) ret |= (query(1, n-x+1) <= b); } } return ret; } int bsearch(int l, int r) { int ret = 0; while(l <= r) { int mid = (l+r)/2; if(check(mid)) l = mid+1, ret = mid; else r = mid-1; } return ret; } int main() { cin.tie(0)->sync_with_stdio(0); int red = min(m, n); cin >> m >> n >> b >> p; // m columns, n rows for(int i = 1; i <= p; i++) { cin >> obs[i].x1 >> obs[i].y1 >> obs[i].x2 >> obs[i].y2 >> obs[i].c; if(b == 0) red = min(red, max({obs[i].x1-1, obs[i].y1-1, m-obs[i].x2, n-obs[i].y2})); } cout << bsearch(1, red) << "\n"; }

컴파일 시 표준 에러 (stderr) 메시지

pyramid_base.cpp: In function 'bool check(int)':
pyramid_base.cpp:59:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<E>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |     for(int i = 0; i < evs.size(); i++) {
      |                    ~~^~~~~~~~~~~~
pyramid_base.cpp:61:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<E>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |         if(i >= evs.size()-1 || evs[i].t != evs[i+1].t) {
      |            ~~^~~~~~~~~~~~~~~
#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...
#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...
#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...