제출 #294029

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
294029	2020-09-08 14:32:00	Saboon	늑대인간 (IOI18_werewolf)	C++17	100 / 100	3119 ms	148332 KiB

werewolf

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#include "werewolf.h"
#include <bits/stdc++.h>
using namespace std;
const int maxn = 4e5 + 10;
const int N = 2e5 + 10;
vector<int> fex[N], fen[N];
void addinit(int x, int y){ // 0-index
  x ++, y ++;
  for (; x < N; x += x & -x)
    fex[x].push_back(y);
}
void add(int x, int y){
    x ++, y ++;
  for (; x < N; x += x & -x){
    int idy = lower_bound(fex[x].begin(),fex[x].end(),y)-fex[x].begin()+1;
    for (; idy < fen[x].size(); idy += idy & -idy)
      fen[x][idy] ++;
  }
}
int get(int x, int y){
    x ++, y ++;
  int ret = 0;
  for (; x; x -= x & -x){
    int idy = upper_bound(fex[x].begin(),fex[x].end(),y)-fex[x].begin();
    for (; idy; idy -= idy & -idy)
      ret += fen[x][idy];
 
 
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컴파일 시 표준 에러 (stderr) 메시지

werewolf.cpp: In function 'void add(int, int)':
werewolf.cpp:19:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |   for (; idy < fen[x].size(); idy += idy & -idy)
      |          ~~~~^~~~~~~~~~~~~~~
werewolf.cpp: In member function 'void DSU::merge(int, int, int)':
werewolf.cpp:53:7: warning: unused variable 'Tv' [-Wunused-variable]
   53 |   int Tv = v, Tu = u;
      |       ^~
werewolf.cpp:53:15: warning: unused variable 'Tu' [-Wunused-variable]
   53 |   int Tv = v, Tu = u;
      |               ^~

• Subtask 1: 7 / 7
• Subtask 2: 8 / 8
• Subtask 3: 34 / 34
• Subtask 4: 51 / 51