제출 #1017290

#제출 시각아이디문제언어결과실행 시간메모리
1017290huutuan팀들 (IOI15_teams)C++14
0 / 100
4040 ms130732 KiB
#include "teams.h" #include <bits/stdc++.h> using namespace std; struct Node{ vector<int> data; void merge(const Node &tl, const Node &tr){ data.resize(tl.data.size()+tr.data.size()); std::merge(tl.data.begin(), tl.data.end(), tr.data.begin(), tr.data.end(), data.begin()); } }; struct SegmentTree{ int n; vector<Node> t; void init(int _n){ n=_n; t.assign(4*n+1, Node()); } void build(int k, int l, int r, pair<int, int> a[]){ if (l==r){ t[k].data.push_back(a[l].second); return; } int mid=(l+r)>>1; build(k<<1, l, mid, a); build(k<<1|1, mid+1, r, a); t[k].merge(t[k<<1], t[k<<1|1]); } // int cnt; // int count(int k, int val){ // return upper_bound(t[k].data.begin(), t[k].data.end(), val)-t[k].data.begin(); // } int get(int k, int l, int r, int L, int R, int val){ if (r<L || R<l) return 0; if (L<=l && r<=R) return t[k].data.end()-lower_bound(t[k].data.begin(), t[k].data.end(), val); int mid=(l+r)>>1; return get(k<<1, l, mid, L, R, val)+get(k<<1|1, mid+1, r, L, R, val); } // int walk(int k, int l, int r, int L, int R, int val){ // if (r<L || R<l) return 0; // if (L<=l && r<=R){ // int cc=count(k, val); // if (cc<cnt){ // cnt-=cc; // return 0; // } // } // if (l==r) return t[k].data[0]<=val && cnt==1; // int mid=(l+r)>>1; // int ans=walk(k<<1, l, mid, L, R, val); // if (ans) return ans; // return walk(k<<1|1, mid+1, r, L, R, val); // } } st; const int N=5e5+10; int n, pos[N]; pair<int, int> a[N]; void init(int _N, int _A[], int _B[]) { n=_N; for (int i=1; i<=n; ++i) a[i]={_A[i-1], _B[i-1]}; sort(a+1, a+n+1); st.init(n); st.build(1, 1, n, a); for (int i=1; i<=n; ++i) pos[i]=0; for (int i=1; i<=n; ++i) pos[a[i].first]=max(pos[a[i].first], i); for (int i=2; i<=n; ++i) pos[i]=max(pos[i], pos[i-1]); } int can(int M, int K[]) { sort(K, K+M); for (int i=0; i<M; ++i){ int sum=0; for (int j=i; j<M; ++j){ sum+=K[j]; if (st.get(1, 1, n, 1, pos[K[j]], K[i])<sum){ return 0; } } } return 1; }

컴파일 시 표준 에러 (stderr) 메시지

teams.cpp: In member function 'int SegmentTree::get(int, int, int, int, int, int)':
teams.cpp:38:47: warning: conversion from '__gnu_cxx::__normal_iterator<int*, std::vector<int> >::difference_type' {aka 'long int'} to 'int' may change value [-Wconversion]
   38 |       if (L<=l && r<=R) return t[k].data.end()-lower_bound(t[k].data.begin(), t[k].data.end(), val);
      |                                ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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