제출 #61413

#제출 시각아이디문제언어결과실행 시간메모리
61413duality원 고르기 (APIO18_circle_selection)C++11
49 / 100
3073 ms331244 KiB
#define DEBUG 0 #include <bits/stdc++.h> using namespace std; #if DEBUG // basic debugging macros int __i__,__j__; #define printLine(l) for(__i__=0;__i__<l;__i__++){cout<<"-";}cout<<endl #define printLine2(l,c) for(__i__=0;__i__<l;__i__++){cout<<c;}cout<<endl #define printVar(n) cout<<#n<<": "<<n<<endl #define printArr(a,l) cout<<#a<<": ";for(__i__=0;__i__<l;__i__++){cout<<a[__i__]<<" ";}cout<<endl #define print2dArr(a,r,c) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<a[__i__][__j__]<<" ";}cout<<endl;} #define print2dArr2(a,r,c,l) cout<<#a<<":\n";for(__i__=0;__i__<r;__i__++){for(__j__=0;__j__<c;__j__++){cout<<setw(l)<<setfill(' ')<<a[__i__][__j__]<<" ";}cout<<endl;} // advanced debugging class // debug 1,2,'A',"test"; class _Debug { public: template<typename T> _Debug& operator,(T val) { cout << val << endl; return *this; } }; #define debug _Debug(), #else #define printLine(l) #define printLine2(l,c) #define printVar(n) #define printArr(a,l) #define print2dArr(a,r,c) #define print2dArr2(a,r,c,l) #define debug #endif // define #define MAX_VAL 999999999 #define MAX_VAL_2 999999999999999999LL #define EPS 1e-6 #define mp make_pair #define pb push_back // typedef typedef unsigned int UI; typedef long long int LLI; typedef unsigned long long int ULLI; typedef unsigned short int US; typedef pair<int,int> pii; typedef pair<LLI,LLI> plli; typedef vector<int> vi; typedef vector<LLI> vlli; typedef vector<pii> vpii; typedef vector<plli> vplli; // ---------- END OF TEMPLATE ---------- struct circle { int x,y,r,i; }; bool comp(circle a,circle b) { if (a.r == b.r) return a.i < b.i; else return a.r > b.r; } int x[300000],y[300000],r[300000]; circle c[300000]; LLI sq(LLI n) { return n*n; } int inter(int a,int b) { return (sq(x[a]-x[b])+sq(y[a]-y[b])) <= sq(r[a]+r[b]); } map<pii,vi> M; int ans[300000]; int main() { int i; int n; scanf("%d",&n); for (i = 0; i < n; i++) { scanf("%d %d %d",&x[i],&y[i],&r[i]); c[i].x = x[i],c[i].y = y[i],c[i].r = r[i],c[i].i = i; } sort(c,c+n,comp); int j,k,l; int bs = 1 << 30; fill(ans,ans+n,-1); M[mp(0,0)] = vi(); for (i = 0; i < n; i++) M[mp(0,0)].pb(i); for (i = 0; i < n; i++) { if (ans[c[i].i] == -1) { if (c[i].r <= (bs >> 1)) { while (c[i].r <= (bs >> 1)) bs >>= 1; M.clear(); for (j = i; j < n; j++) { if (ans[c[j].i] == -1) { pii p = mp(c[j].x/bs,c[j].y/bs); if (!M.count(p)) M[p] = vi(); M[p].pb(c[j].i); } } } for (j = c[i].x/bs-2; j <= c[i].x/bs+2; j++) { for (k = c[i].y/bs-2; k <= c[i].y/bs+2; k++) { vi v = M[mp(j,k)]; M[mp(j,k)].clear(); for (l = 0; l < v.size(); l++) { if (inter(c[i].i,v[l])) ans[v[l]] = c[i].i; else M[mp(j,k)].pb(v[l]); } } } } } for (i = 0; i < n; i++) printf("%d ",ans[i]+1); return 0; }

컴파일 시 표준 에러 (stderr) 메시지

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:103:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                     for (l = 0; l < v.size(); l++) {
                                 ~~^~~~~~~~~~
circle_selection.cpp:74:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
circle_selection.cpp:76:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d",&x[i],&y[i],&r[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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