제출 #761735

#제출 시각아이디문제언어결과실행 시간메모리
761735Dan4LifeAliens (IOI16_aliens)C++17
12 / 100
76 ms2260 KiB
#include "aliens.h" #include <bits/stdc++.h> using namespace std; #define pb push_back #define sz(a) (int)a.size() using ll = long long; using ar = array<int,2>; vector<ar> v,w; ll sq(int i, int j){ return 1ll*(v[j][0]-v[i][1]+1)*(v[j][0]-v[i][1]+1); } ll take_photos(int n, int m, int k, vector<int> r, vector<int> c) { for(int i = 0; i < n; i++) if(r[i]>c[i]) r[i]=m-r[i]-1,c[i]=m-c[i]-1; for(int i = 0; i < n; i++) w.pb({c[i],r[i]}); sort(begin(w),end(w),[&](ar a, ar b){ if(a[0]!=b[0]) return a[0]<b[0]; return a[1]>b[1]; }); int mn=m; for(int i = n-1; i >=0; i--){ if(mn>w[i][1]) v.pb(w[i]); mn = min(mn,w[i][1]); } n = sz(v); ll dp[k+1][n+1], ans = (ll)4e18; memset(dp,63,sizeof(dp)); sort(begin(v),end(v)); for(int i = 1; i <= n; i++) dp[1][i] = sq(0,i-1); for(int j = 2; j <= k; j++) for(int i = 1; i <= n; i++) for(int x = 1; x < i; x++) dp[j][i] = min(dp[j][i], dp[j-1][x]+sq(x,i-1)); for(int i = 1; i <= k; i++) ans = min(ans, dp[i][n]); return ans; }
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