제출 #966970

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
966970		MarwenElarbi	Aliens (IOI16_aliens)	C++17	0 / 100	1 ms	432 KiB

aliens

//#include "aliens.h"
#include <bits/stdc++.h>
using namespace std;
long long take_photos(int n, int m, int k, std::vector<int> r, std::vector<int> c){
    set<int> st;
    for (int i = 0; i < n; ++i)
    {
        st.insert(r[i]);
    }
    if(k>=st.size()) return st.size();
    vector<int> tab;
    tab.push_back(-1);
    for(auto u:st) tab.push_back(u);
    int dp[tab.size()+1][k+1];
    for (int i = 0; i <= n; ++i)
    {
        for (int j = 0; j <= k; ++j)
        {
            dp[i][j]=1e9;
        }
    }
    int ans=m*m;
    dp[0][0]=0;
    for (int i = 1; i < tab.size(); ++i)
    {
        int lst=tab[i];
        int cur=1;
        //cout <<i<<endl;
        for (int j = i; j >= 0 ; --j)
        {
            //cout <<i<<" "<<j<<" "<<cur<<" "<<dp[j-1][1]<<endl;
            if(j==0){
                //cout <<i<<endl;
                //cout <<"nabba"<<endl;
                dp[i][1]=cur*cur;
            }else{
                //cout <<"nabba"<<endl;
                cur+=lst-tab[j];
                lst=tab[j];
                for (int t = 1; t <= k; ++t)
                {
                    //cout <<i<<" "<<t<<endl;
                    dp[i][t]=min(dp[i][t],dp[j-1][t-1]+cur*cur);
                    //cout <<dp[i][t]<<endl;
                }
            }
        }
    }
    for (int i = 0; i <= k; ++i)
    {
       ans=min(ans,dp[tab.size()-1][k]); 
    }
    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

aliens.cpp: In function 'long long int take_photos(int, int, int, std::vector<int>, std::vector<int>)':
aliens.cpp:10:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |     if(k>=st.size()) return st.size();
      |        ~^~~~~~~~~~~
aliens.cpp:24:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     for (int i = 1; i < tab.size(); ++i)
      |                     ~~^~~~~~~~~~~~

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