제출 #862444

#제출 시각아이디문제언어결과실행 시간메모리
862444HossamHero7Osumnjičeni (COCI21_osumnjiceni)C++14
10 / 110
1061 ms16028 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; #define endl '\n' void compress(vector<int> &a){ int n = a.size(); vector<pair<int,int>> b(n); for(int i=0;i<n;i++){ b[i].first = a[i]; b[i].second = i; } sort(b.begin(),b.end()); a[b[0].second] = 1; int cnt = 1; for(int i=1;i<n;i++){ if(b[i].first == b[i-1].first){ a[b[i].second] = a[b[i-1].second]; } else a[b[i].second] = ++cnt; } } struct segTree{ int n; vector<int> tree , lazy; segTree(int _n){ n = _n; tree.resize(4*n+5); lazy.resize(4*n+5,-1); } void prop(int node,int l,int r){ tree[node] = lazy[node]; if(l != r){ lazy[node<<1] = lazy[node]; lazy[node<<1|1] = lazy[node]; } lazy[node] = -1; } void update(int node,int l,int r,int lQ,int rQ,int val){ if(l>r) return; if(~lazy[node]) prop(node,l,r); if(lQ>r || l>rQ) return; if(lQ<=l&&r<=rQ) return lazy[node] = val, prop(node,l,r), void(); int md = l + r >> 1; update(node<<1,l,md,lQ,rQ,val), update(node<<1|1,md+1,r,lQ,rQ,val); tree[node] = tree[node<<1] | tree[node<<1|1]; } void update(int l,int r,int val=1){ update(1,1,n,l,r,val); } int query(int node,int l,int r,int lQ,int rQ){ if(l>r) return 0; if(~lazy[node]) prop(node,l,r); if(lQ>r || l>rQ) return 0; if(lQ<=l&&r<=rQ) return tree[node]; int md = l + r >> 1; return query(node<<1,l,md,lQ,rQ) | query(node<<1|1,md+1,r,lQ,rQ); } int query(int l,int r){ return query(1,1,n,l,r); } }; void solve(){ int n; cin>>n; vector<pair<int,int>> v(n); for(auto &[l,r] : v) cin>>l>>r; vector<int> tmp; for(auto [l,r] : v) tmp.push_back(l); for(auto [l,r] : v) tmp.push_back(r); compress(tmp); for(int i=0;i<n;i++) v[i] = {tmp[i],tmp[i+n]}; int q; cin>>q; segTree sg(2*n); while(q--){ int a,b; cin>>a>>b; a --, b--; int ans = 1; sg.update(1,2*n,0); for(int i=a;i<=b;i++){ int l = v[i].first, r = v[i].second; if(sg.query(l,r)) { sg.update(1,2*n,0); ans ++; } sg.update(l,r); } cout<<ans<<endl; } } int main(){ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); int t=1; //cin>>t; while(t--){ solve(); } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In member function 'void segTree::update(int, int, int, int, int, int)':
Main.cpp:43:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   43 |         int md = l + r >> 1;
      |                  ~~^~~
Main.cpp: In member function 'int segTree::query(int, int, int, int, int)':
Main.cpp:55:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   55 |         int md = l + r >> 1;
      |                  ~~^~~
Main.cpp: In function 'void solve()':
Main.cpp:66:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   66 |     for(auto &[l,r] : v) cin>>l>>r;
      |               ^
Main.cpp:68:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   68 |     for(auto [l,r] : v) tmp.push_back(l);
      |              ^
Main.cpp:69:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   69 |     for(auto [l,r] : v) tmp.push_back(r);
      |              ^
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