제출 #31150

#제출 시각아이디문제언어결과실행 시간메모리
31150dongwon0427휴가 (IOI14_holiday)C++11
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; int n,st,d,Aidx[100005]; struct seg { ll val; int gaesu; seg operator + (const seg &a) const { seg ret; ret.val = val + a.val; ret.gaesu=gaesu + a.gaesu; return ret; } }; struct _tuple {int idx;ll val;}; seg segtree[400005]; _tuple A[100005]; void updt(int idx,int s,int e,int x,seg key) { segtree[idx] = segtree[idx] + key; if(s==e) return; if(s<=x && x<=(s+e)/2) updt(idx*2,s,(s+e)/2,x,key); else updt(idx*2+1,(s+e)/2+1,e,x,key); } ll ksum(int idx,int s,int e,int k) { if(k<=0) return 0ll; if(k >= segtree[idx].gaesu) return segtree[idx].val; if(s==e) { if(segtree[idx].gaesu==0 || k<=0) return 0ll; return segtree[idx].val; } if( segtree[idx*2].gaesu < k ) return segtree[idx*2].val + ksum(idx*2+1,(s+e)/2+1,e,k-segtree[idx*2].gaesu); return ksum(idx*2,s,(s+e)/2,k); } ll dodp(int s,int e,int p,int q) { if(s>e) return 0; int m = (s+e)/2; for(int i=m;i<=e;i++) { seg tmp; tmp.gaesu=1;tmp.val=A[i].val; updt(1,0,n-1,Aidx[i],tmp); } int v=p; ll _max = 0; for(int i=p;i<=q;i++) { seg tmp; tmp.gaesu=1;tmp.val=A[i].val; updt(1,0,n-1,Aidx[i],tmp); ll tmpm = ksum(1,0,n-1,d - 2*(i-st) - (st-m)); if(_max < tmpm) { v = i; _max = tmpm; } } for(int i=v;i<=q;i++) { seg tmp; tmp.gaesu=-1;tmp.val=-A[i].val; updt(1,0,n-1,Aidx[i],tmp); } for(int i=m;i<=e;i++) { seg tmp; tmp.gaesu=-1;tmp.val=-A[i].val; updt(1,0,n-1,Aidx[i],tmp); } ll ret1 = dodp(m+1,e,v,q); for(int i=p;i<v;i++) { seg tmp; tmp.gaesu=-1;tmp.val=-A[i].val; updt(1,0,n-1,Aidx[i],tmp); } for(int i=m;i<=e;i++) { seg tmp; tmp.gaesu=1;tmp.val=A[i].val; updt(1,0,n-1,Aidx[i],tmp); } ll ret2 = dodp(s,m-1,p,v); for(int i=m;i<=e;i++) { seg tmp; tmp.gaesu=-1;tmp.val=-A[i].val; updt(1,0,n-1,Aidx[i],tmp); } ll ret = max({ret1,ret2,_max}); return ret; } ll straight(int idx) { ll ret = 0; for(int i=idx;i<n;i++) { seg tmp; tmp.val = A[i].val; tmp.gaesu = 1; updt(1,0,n-1,Aidx[i],tmp); ret = max(ret,ksum(1,0,n-1,d - 2*(i-idx))); } for(int i=idx;i<n;i++) { seg tmp; tmp.val = -A[i].val; tmp.gaesu = -1; updt(1,0,n-1,Aidx[i],tmp); } return ret; } int main() { scanf("%d%d%d",&n,&st,&d); for(int i=0;i<n;i++) { scanf("%lld",&A[i].val); A[i].idx=i; } sort(A,A+n,[](_tuple a,_tuple b){return a.val > b.val;}); for(int i=0;i<n;i++) Aidx[A[i].idx]=i; sort(A,A+n,[](_tuple a,_tuple b){return a.idx<b.idx;}); ll ans1 = dodp(0,st-1,st,n-1); ll ans3 = straight(st); sort(A,A+n,[](_tuple a,_tuple b){return a.idx>b.idx;}); for(int i=0;i<n/2;i++) swap(Aidx[i], Aidx[n-1-i]); ll ans2 = dodp(0,n-st-2,n-st-1,n-1); ll ans4 = straight(n-st-1); printf("%lld\n",max({ans1,ans2,ans3,ans4})); return 0; }

컴파일 시 표준 에러 (stderr) 메시지

holiday.cpp: In function 'int main()':
holiday.cpp:89:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d",&n,&st,&d);
                              ^
holiday.cpp:91:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",&A[i].val);
                                ^
grader.cpp: In function 'int main()':
grader.cpp:7:12: warning: variable 'n_s' set but not used [-Wunused-but-set-variable]
     int i, n_s;
            ^
/tmp/cct2GrbV.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/cc8irCFO.o:holiday.cpp:(.text.startup+0x0): first defined here
/tmp/cct2GrbV.o: In function `main':
grader.cpp:(.text.startup+0x7a): undefined reference to `findMaxAttraction(int, int, int, int*)'
collect2: error: ld returned 1 exit status