Submission #386499

#	Time	Username	Problem	Language	Result	Execution time	Memory
386499		ACmachine	Aliens (IOI16_aliens)	C++17	16 / 100	261 ms	2284 KiB

aliens

#include "aliens.h"
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using ordered_map = tree<T, U, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

typedef long long ll;
typedef long double ld;

typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

typedef vector<int> vi;
typedef vector<ll> vll;

#define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
#define FORD(i,j,k,in) for(int i=(j); i >=(k);i-=in)
#define REP(i,b) FOR(i,0,b,1)
#define REPD(i,b) FORD(i,b,0,1)
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define MANY_TESTS int tcase; cin >> tcase; while(tcase--)

const double EPS = 1e-9;
const int MOD = 1e9+7;
const ll INFF = 1e18;
const int INF = 1e9;
const ld PI = acos((ld)-1);
const vi dy = {1, 0, -1, 0, -1, 1, 1, -1};
const vi dx = {0, 1, 0, -1, -1, 1, -1, 1};

void DBG(){cout << "]" << endl;}
template<typename T, typename ...U> void DBG(const T& head, const U... args){ cout << head << "; "; DBG(args...); }
#define dbg(...) cout << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__);
#define chk() cout << "Check at line(" << __LINE__ << ") hit." << endl;

template<class T, unsigned int U>
ostream& operator<<(ostream& out, const array<T, U> &v){out << "[";  REP(i, U) out << v[i] << ", ";  out << "]"; return out;}
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "[" << par.first << ";" << par.second << "]"; return out;}
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template<class T>
ostream& operator<<(ostream& out, const vector<T> &v){ out << "[";  REP(i, v.size()) out << v[i] << ", ";  out << "]"; return out;}

template<class T>
istream& operator>>(istream& in, vector<T> &v){ for(auto &x : v) in >> x; return in; }


long long take_photos(int n, int m, int k, std::vector<int> r, std::vector<int> c) {
    auto solvef = [&](){
        vector<vector<bool>> grid(m, vector<bool>(m, false));
        REP(i, n){
            int low = min(r[i], c[i]);
            int hi = max(r[i], c[i]);
            FOR(j, low, hi + 1, 1){
                FOR(g, low, hi + 1, 1){
                    grid[j][g] = true;
                }
            }
        }
        int ans = 0;
        REP(i, m){
            REP(j, m){
                if(grid[i][j])
                    ans++;
            }
        }
        return ans;
    };
    auto solves = [&](){
        vector<bool> is(m, false);
        REP(i, n) is[r[i]] = true;
        vector<vector<ll>> dp(m + 1, vector<ll>(k + 1, INFF));
        dp[0][0] = 0;
        FOR(i, 1, m + 1, 1){
            REP(j, k + 1){
                if(!is[i - 1])
                    dp[i][j] = dp[i - 1][j];
            }
            FOR(j, 1, k + 1, 1){
                REP(g, i){
                    dp[i][j] = min(dp[i][j], dp[g][j - 1] + (i - g) * (i - g));
                }
            }
        }
        ll ans = INFF;
        REP(j, k + 1)
            ans = min(ans, dp[m][j]);
        return ans;
    };
    if(k == n)
        return solvef();
    else
        return solves();
    return 0;
}

• Subtask 1: 4 / 4
• Subtask 2: 12 / 12
• Subtask 3: 0 / 9
• Subtask 4: 0 / 16
• Subtask 5: 0 / 19
• Subtask 6: 0 / 40