제출 #1022481

#제출 시각아이디문제언어결과실행 시간메모리
1022481handlenameGlobal Warming (CEOI18_glo)C++17
17 / 100
39 ms5592 KiB
#include <bits/stdc++.h> using namespace std; #define pb push_back #define mp make_pair #define float long double const int MOD=1e9+7; // const int MOD=998244353; const int sqn=450; const long double eps=1e-6; const int dx[4]={0,0,1,-1}; const int dy[4]={1,-1,0,0}; long long power(long long a,long long b,long long p=MOD){ long long res=1; while (b>0){ if (b%2==1) res=(res*a)%p; b/=2; a=(a*a)%p; } return res; } long long n,x,arr[200001],ans[200001]; long long res; void runtc(){ cin>>n>>x; for (int i=1;i<=n;i++){ cin>>arr[i]; } //can consider only decrementing //only need consider decrement [1,x] //try to "fix" x //find LIS for prefix and suffix vector<int> lol; for (int i=n;i>=1;i--){ int pos=lower_bound(lol.begin(),lol.end(),-(arr[i]-x))-lol.begin(); ans[i]=pos+1; pos=lower_bound(lol.begin(),lol.end(),-(arr[i]))-lol.begin(); if (pos>=lol.size()){ lol.pb(-arr[i]); } else { lol[pos]=-arr[i]; } } lol.clear(); for (int i=1;i<=n;i++){ int pos=lower_bound(lol.begin(),lol.end(),arr[i])-lol.begin(); if (pos>=lol.size()){ lol.pb(arr[i]); } else { lol[pos]=arr[i]; } res=max(res,(long long)lol.size()+ans[i]-1); } cout<<res; } int main(){ ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); // freopen("pcb.in","r",stdin); // freopen("pcb.out","w",stdout); //freopen("input1.in","r",stdin); // freopen("output1.out","w",stdout); //freopen("tower_rush_input.txt","r",stdin); //freopen("hackercup_output.txt","w",stdout); int tcs; // cin>>tcs; tcs=1; for (int i=1;i<=tcs;i++){ // cout<<"Case #"<<i<<": "; runtc(); } }

컴파일 시 표준 에러 (stderr) 메시지

glo.cpp: In function 'void runtc()':
glo.cpp:37:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |         if (pos>=lol.size()){
      |             ~~~^~~~~~~~~~~~
glo.cpp:47:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |         if (pos>=lol.size()){
      |             ~~~^~~~~~~~~~~~
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