제출 #434715

#제출 시각아이디문제언어결과실행 시간메모리
434715cpp219Sterilizing Spray (JOI15_sterilizing)C++14
100 / 100
2159 ms5248 KiB
#pragma GCC optimization "O2" #pragma GCC optimization "unroll-loop" #pragma GCC target ("avx2") #include <bits/stdc++.h> #define ll long long #define ld long double #define fs first #define sc second using namespace std; const ll N = 1e5 + 9; const ll mod = 1e9 + 7; const ll Log2 = 20; typedef pair<ll,ll> LL; ll n,Q,k,x,a[N]; 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] = 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 Get(id*2,l,mid,u,v) + Get(id*2 + 1,mid + 1,r,u,v); } ll Walk(ll id,ll l,ll r,ll val){ ///first value which > val if (l == r){ if (st[id] > val) return l; return n + 1; } ll mid = (l + r)/2; if (st[id*2] > val) return Walk(id*2,l,mid,val); return Walk(id*2 + 1,mid + 1,r,val - st[id*2]); } ll type,l,r; 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>>Q>>k; for (ll i = 1;i <= n;i++) cin>>x,upd(1,1,n,i,x); while(Q--){ cin>>type>>l>>r; if (type == 1) upd(1,1,n,l,r); else if (type == 2){ if (k > 1){ while(l <= r){ ll now = Get(1,1,n,l,l); now /= k; upd(1,1,n,l,now); l = Walk(1,1,n,Get(1,1,n,1,l)); //l++; } } } else cout<<Get(1,1,n,l,r)<<"\n"; } }

컴파일 시 표준 에러 (stderr) 메시지

sterilizing.cpp:1: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    1 | #pragma GCC optimization "O2"
      | 
sterilizing.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    2 | #pragma GCC optimization "unroll-loop"
      | 
sterilizing.cpp: In function 'int main()':
sterilizing.cpp:55:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   55 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
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