Submission #138375

#	Time	Username	Problem	Language	Result	Execution time	Memory
138375		Runtime_error_	Aliens (IOI16_aliens)	C++14	0 / 100	192 ms	199680 KiB

aliens

#include "aliens.h"
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll inf = 5e4+9,K = 509,MX = 1e18+9;

ll sqr(ll x){
    return x*x;
}

ll dp[K][inf];
pair<ll,ll> a[inf];
vector<pair<ll,ll> > all;

bool cmp(pair<ll,ll> x,pair<ll,ll> y){
    if(x.first == y.first)
        return x.second > y.second;
    return x.first < y.first;
}

ll take_photos(int n, int m, int k, vector<int> r, vector<int> c) {

    for(int i=0;i<n;i++)
        r[i]++,c[i]++,
        all.push_back( make_pair(min(r[i],c[i]),max(r[i],c[i])) );

    sort(all.begin(),all.end());
    n = 1;
    a[n] = all[0];
    for(auto o:all){
        if(o.second <= a[n].second)
           continue;
        a[++n] = make_pair(o.first,-o.second);
    }

    memset(dp,61,sizeof(dp));
    dp[0][0] = 0;

    for(ll j=1;j<=k;j++){
        for(ll i=1;i<=n;i++){
            dp[j][i] = dp[j-1][i];
            for(ll z = 1;z<=i;z++)
                dp[j][i] = min(dp[j][i] ,
                            dp[j-1][z-1] + sqr(a[i].second - a[z].first+1) -
                            sqr(max(0ll,a[z-1].second - a[z].first+1)) );
        }
    }
    return dp[k][n];
}

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