Submission #43038

#TimeUsernameProblemLanguageResultExecution timeMemory
43038top34051Aliens (IOI16_aliens)C++14
Compilation error
0 ms0 KiB
#include "aliens.h" #include<bits/stdc++.h> using namespace std; #define ll long long #define pii pair<ll,ll> #define X first #define Y second const int maxn = 1e5 + 5; struct line { ll m,c; line(ll _m = 0, ll _c = 0) { m = _m; c = _c; } }; int n,m,k; pii p[maxn]; int r[maxn], c[maxn]; ll dp[maxn][maxn]; line cht[maxn]; bool cmp(pii x, pii y) { if(x.X!=y.X) return x.X<y.X; return x.Y>y.Y; } ll p2(ll x) { return x*x; } double cut(int x, int y) { if(x==0 || y==0) return -2e16; return (double)(cht[y].c-cht[x].c)/(cht[x].m-cht[y].m); } void solve() { for(int x=1;x<=n;x++) dp[x][0] = 1e13; for(int t=1;t<=k;t++) { int len = 0; for(int x=1;x<=n;x++) { cht[++len] = line(-2*r[x], p2(r[x]) + dp[x-1][t-1] - p2(max(0,c[x-1]-r[x]))); while(len>=3 && cut(len-1,len)<=cut(len-2,len)) cht[len-1] = cht[len], len--; int l = 2, r = len, mid, pos = 1; while(l<=r) { int mid = (l+r)/2; if(cut(mid-1,mid)<=c[x]) pos = mid, l = mid+1; else r = mid-1; } dp[x][t] = cht[pos].m*c[x] + cht[pos].c + p2(c[x]); // printf("dp %d %d = %lld\n",x,t,dp[x][t]); } } } long long take_photos(int N, int M, int K, std::vector<int> R, std::vector<int> C) { n = N; m = M; k = K; //prep for(int i=0;i<n;i++) { p[i] = {R[i],C[i]}; if(p[i].X>p[i].Y) swap(p[i].X,p[i].Y); } sort(p,p+n,cmp); ll cur = -1, sz = 0; for(int i=0;i<n;i++) { if(p[i].Y<=cur) continue; sz++; r[sz] = p[i].X; c[sz] = p[i].Y+1; cur = p[i].Y; } n = sz; solve(); return dp[n][k]; }

Compilation message (stderr)

aliens.cpp: In function 'void solve()':
aliens.cpp:43:33: warning: unused variable 'mid' [-Wunused-variable]
             int l = 2, r = len, mid, pos = 1;
                                 ^
/tmp/cctVqRTN.o: In function `solve()':
aliens.cpp:(.text+0xb0): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cctVqRTN.o
aliens.cpp:(.text+0xf4): relocation truncated to fit: R_X86_64_PC32 against symbol `k' defined in .bss section in /tmp/cctVqRTN.o
aliens.cpp:(.text+0x124): relocation truncated to fit: R_X86_64_32S against symbol `r' defined in .bss section in /tmp/cctVqRTN.o
aliens.cpp:(.text+0x13b): relocation truncated to fit: R_X86_64_32 against symbol `r' defined in .bss section in /tmp/cctVqRTN.o
aliens.cpp:(.text+0x140): relocation truncated to fit: R_X86_64_32 against symbol `c' defined in .bss section in /tmp/cctVqRTN.o
/tmp/cctVqRTN.o: In function `take_photos(int, int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)':
aliens.cpp:(.text+0x35a): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/cctVqRTN.o
aliens.cpp:(.text+0x360): relocation truncated to fit: R_X86_64_PC32 against symbol `m' defined in .bss section in /tmp/cctVqRTN.o
aliens.cpp:(.text+0x366): relocation truncated to fit: R_X86_64_PC32 against symbol `k' defined in .bss section in /tmp/cctVqRTN.o
aliens.cpp:(.text+0x376): relocation truncated to fit: R_X86_64_32 against symbol `p' defined in .bss section in /tmp/cctVqRTN.o
aliens.cpp:(.text+0x3ba): relocation truncated to fit: R_X86_64_32S against symbol `p' defined in .bss section in /tmp/cctVqRTN.o
aliens.cpp:(.text+0x3c1): additional relocation overflows omitted from the output
collect2: error: ld returned 1 exit status