제출 #431269

#제출 시각아이디문제언어결과실행 시간메모리
431269cpp219Financial Report (JOI21_financial)C++14
5 / 100
494 ms27452 KiB
#pragma GCC optimization "O2" #pragma GCC optimization "unroll-loop" #pragma GCC target ("avx2") #include <bits/stdc++.h> #define ll int #define ld long double #define fs first #define sc second using namespace std; const ll N = 3e5 + 9; const ll inf = 1e9 + 7; typedef pair<ll,ll> LL; vector<ll> v,g[N]; ll n,D,a[N],dp[N]; ll Find(ll x){ return lower_bound(v.begin(),v.end(),x) - v.begin() + 1; } void compress(){ sort(v.begin(),v.end()); v.resize(unique(v.begin(),v.end()) - v.begin()); for (ll i = 1;i <= n;i++) a[i] = Find(a[i]),g[a[i]].push_back(i); for (ll i = 1;i <= n;i++) g[i].push_back(inf); } ll st[4*N]; void upd(ll id,ll l,ll r,ll u,ll val){ if (u < l||r < u) return; if (l == r){ st[id] = val; return; } ll mid = (l + r)/2; upd(id*2,l,mid,u,val); upd(id*2 + 1,mid + 1,r,u,val); st[id] = max(st[id*2],st[id*2 + 1]); } ll Get(ll id,ll l,ll r,ll u,ll v){ if (v < l||r < u) return 0; if (u <= l&&r <= v) return st[id]; ll mid = (l + r)/2; return max(Get(id*2,l,mid,u,v),Get(id*2 + 1,mid + 1,r,u,v)); } int main(){ ios_base::sync_with_stdio(0); cin.tie(0), cout.tie(0); #define task "tst" if (fopen(task".inp", "r")){ freopen(task".inp", "r", stdin); //freopen(task".out", "w", stdout); } cin>>n>>D; for (ll i = 1;i <= n;i++) cin>>a[i],v.push_back(a[i]); memset(dp,1,sizeof(dp)); compress(); ll ans = 1; upd(1,1,n,a[1],1); for (ll i = 2;i <= n;i++){ ll L = i - D - 1,now; if (L > 0){ now = a[L]; ll nxt = *lower_bound(g[now].begin(),g[now].end(),L + 1); if (nxt > i) upd(1,1,n,a[L],0); } dp[i] = Get(1,1,n,1,a[i] - 1) + 1; upd(1,1,n,a[i],dp[i]); //cout<<i<<" "<<Get(1,1,n,1,a[i] - 1)<<"\n"; ans = max(ans,dp[i]); } cout<<ans; }

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp:1: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    1 | #pragma GCC optimization "O2"
      | 
Main.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    2 | #pragma GCC optimization "unroll-loop"
      | 
Main.cpp: In function 'int main()':
Main.cpp:50:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
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