제출 #41070

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
41070	2018-02-12 10:54:17	IvanC	전압 (JOI14_voltage)	C++14	100 / 100	375 ms	64020 KiB

voltage

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#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> ii;
const int MAXN = 1e5 + 10;
const int MAXM = 2*1e5 + 10;
int e1[MAXM],e2[MAXM],pai[MAXN],ligapai[MAXN],peso[MAXN],N,M,ans;
int possivel,last,oldw[MAXM],oldz[MAXM],oldpai[MAXM],oldliga[MAXM],oldpeso[MAXM],oldpossivel[MAXM];
int find(int x){
  if(x == pai[x]) return x;
  return find(pai[x]);
}
int parity(int x){
  if(x == pai[x]) return 0;
  return (ligapai[x] ^ parity(pai[x]));
}
void join(int x,int y){
  int w = find(x), z = find(y),px = parity(x),py = parity(y);
  if(peso[w] < peso[z]){
    swap(w,z);
    swap(px,py);
    swap(x,y);
  }
  last++;
  oldw[last] = w;
  oldz[last] = z;
  oldpai[last] = pai[z];
  oldliga[last] = ligapai[z];
  oldpeso[last] = peso[w];
  oldpossivel[last] = possivel;
  if(w == z){
 
 
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컴파일 시 표준 에러 (stderr) 메시지

voltage.cpp: In function 'int main()':
voltage.cpp:73:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&N,&M);
                      ^
voltage.cpp:81:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&e1[i],&e2[i]);
                               ^

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 35 / 35
• Subtask 4: 45 / 45