제출 #501608

#제출 시각아이디문제언어결과실행 시간메모리
501608sidon팀들 (IOI15_teams)C++17
0 / 100
548 ms123016 KiB
#include <bits/stdc++.h> using namespace std; int sV; struct WaveletTree{ int l, r; vector<int> p; WaveletTree *L, *R; WaveletTree() {} WaveletTree(int *aL, int *aR, int vL, int vR) : l(vL), r(vR) { if(vR - vL < 2) return; if(aL == aR) return; int m = (l + r) / 2; auto toL = [m](int i) { return i < m; }; p.resize(aR-aL+1); for(int i = 0; aL + i != aR; i++) p[i+1] = toL(*(aL+i)) + p[i]; int *aM = stable_partition(aL, aR, toL); L = new WaveletTree(aL, aM, l, m); R = new WaveletTree(aM, aR, m, r); } int query(int sL, int sR, int _sV) { sV = _sV; return query(sL, sR); } int query(int sL, int sR) { if(sL == sR || sV >= r) return 0; if(sV <= l) return sR - sL; return L->query(p[sL], p[sR]) + R->query(sL-p[sL], sR-p[sR]); } }* wt; int N, sA[1<<19]; void init(int n, int A[], int B[]) { int s[N=n], sB[N]; iota(s, s+n, 0); sort(s, s+n, [&](int &i, int &j) { return A[i] < A[j]; }); for(int i = 0; i < N; i++) { sA[i] = A[s[i]]; sB[i] = B[s[i]]; } wt = new WaveletTree(sB, sB + N, 1, N+1); } int can(int M, int K[]) { sort(K, K+M); int add = 0; for(int i = 0; i < M; ++i) { add += K[i]; int j = upper_bound(sA, sA+N, K[i]) - sA; int next = i+1 < M ? K[i+1] : N + 1; int res = wt->query(0, j, K[i]) - wt->query(0, j, next); add = max(0, add - res); } return !add; }

컴파일 시 표준 에러 (stderr) 메시지

teams.cpp: In function 'int can(int, int*)':
teams.cpp:56:39: warning: conversion from 'long int' to 'int' may change value [-Wconversion]
   56 |   int j = upper_bound(sA, sA+N, K[i]) - sA;
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
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