제출 #219537

#제출 시각아이디문제언어결과실행 시간메모리
219537XmtosX로봇 (IOI13_robots)C++17
0 / 100
3080 ms32124 KiB
#include "robots.h" #include <bits/stdc++.h> using namespace std; const int N=1e6; pair<int,int> p[N]; multiset<pair<int,int> > s1; multiset<pair<int,int> > ::iterator it; multiset<int> s; int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) { for (int i=0;i<T;i++) { p[i]={W[i],S[i]}; } sort(p,p+T); sort(X,X+A); reverse(p,p+T); reverse(X,X+A); int low=1,high=T,ans,mid; while (low<=high) { s.clear(); s1.clear(); for (int i=0;i<B;i++) { s1.insert(make_pair(Y[i],0)); } s1.insert(make_pair(2e9+1,0)); mid= (low+high)/2; long long x=0; int cnt=0; bool yes=true; for (int i=0;i<T;i++) { while (cnt<A&&p[i].first<X[cnt]) { cnt++; x+=mid; } s.insert(p[i].second); if (!x) { if (s.empty()) { yes=false; break; } it= s1.lower_bound(make_pair(*s.begin(),mid+1)); if ((*it).first==2e9+1) { yes=false; break; } pair<int,int> P= *it; P.second++; s1.erase(it); if (P.second<mid) s1.insert(P); s.erase(s.begin()); } else { x--; } } if (yes) { ans=mid; high=mid-1; } else low=mid+1; } return ans; }

컴파일 시 표준 에러 (stderr) 메시지

robots.cpp: In function 'int putaway(int, int, int, int*, int*, int*, int*)':
robots.cpp:73:12: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
     return ans;
            ^~~
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