제출 #224487

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
224487	2020-04-18 05:08:49	maximath_1	Pilot (NOI19_pilot)	C++14	100 / 100	970 ms	45116 KiB

pilot

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#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int mxn=1e6+5;
int n, q, par[mxn], sz[mxn];
pair<int, int>h[mxn];
bool vis[mxn];
int f(int a){return par[a]=(par[a]==a)?a:f(par[a]);}
ll calc(int x){return (ll)sz[f(x)]*(sz[f(x)]+1)/2;}
int main(){
  scanf("%d%d", &n, &q);
  for(int i=0; i<n; i++){
    scanf("%d", &h[i].first);
    h[i].second=i; par[i]=i;
    vis[i]=false; sz[i]=1;
  }
  vector<ll>val;
  vector<int>id;
  id.push_back(0); val.push_back(0ll);
  sort(h, h+n);
  ll v=0ll, vt=0ll; int tmp=h[0].first;
  for(int i=0; i<n; i++){
    if(h[i].second>0 && vis[h[i].second-1]){
      int uu=h[i].second, vv=h[i].second-1;
      v-=calc(vv);
      uu=f(uu); vv=f(vv);
      sz[uu]+=sz[vv]; par[vv]=uu;
    }
    if(h[i].second<n-1 && vis[h[i].second+1]){
      int uu=h[i].second, vv=h[i].second+1;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

pilot.cpp: In function 'int main()':
pilot.cpp:11:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &q);
  ~~~~~^~~~~~~~~~~~~~~~
pilot.cpp:13:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &h[i].first);
   ~~~~~^~~~~~~~~~~~~~~~~~~
pilot.cpp:46:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &h);
   ~~~~~^~~~~~~~~~

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