제출 #782454

#제출 시각아이디문제언어결과실행 시간메모리
782454Lyrically선물상자 (IOI15_boxes)C++17
컴파일 에러
0 ms0 KiB
#include<bits/stdc++.h> using namespace std; #define pii pair<int,int> #define pb push_back #define rep(i,n) for(int i=0;i<n;i++) #define rep1(i,n) for(int i=1;i<=n;i++) int read(){int x;scanf("%d",&x);return x;} void print(int x){printf("%d\n",x);} const int mod=1000000007; long long delivery(int n,int k,int L,int p[]) { multiset<pair<long long,long long>> ldis,rdis,all; long long l=L; rep(i,n) { if(p[i]<=l-p[i]) { ldis.insert({p[i],0});all.insert({p[i],0}); } else { rdis.insert({l-p[i],1});all.insert({l-p[i],1}); } } long long res=0; while(!all.empty()) { if((int)all.size()<=k) { long long ld=0,rd=0; for(auto v:all) { if(v.second==0){ld=max(ld,v.first);} else{rd=max(rd,v.first);} } res+=min(2*(ld+rd),l);all.clear(); } else { pair<long long,long long> v=*(--all.end()); all.erase(--all.end()); long long ld=0,rd=0; if(v.second==0){ld=max(ld,v.first);} else{rd=max(rd,v.first);} rep1(i,k-1) { v=*(--all.end()); all.erase(v); if(v.second==0){ld=max(ld,v.first);} else{rd=max(rd,v.first);} } res+=min(2*(ld+rd),l); } } return res; } signed main() { int N=read(),K=read(),L=read(); int X[N]; rep(i,N){int val=read();X[i]=val;} cout<<delivery(N,K,L,X)<<endl; }

컴파일 시 표준 에러 (stderr) 메시지

boxes.cpp: In function 'int read()':
boxes.cpp:7:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 | int read(){int x;scanf("%d",&x);return x;}
      |                  ~~~~~^~~~~~~~~
/usr/bin/ld: /tmp/cchjPNXP.o: in function `main':
grader.c:(.text.startup+0x0): multiple definition of `main'; /tmp/ccuSBcwQ.o:boxes.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status