Submission #1271955

#	Time	Username	Problem	Language	Result	Execution time	Memory
1271955		alexiah	Aliens (IOI16_aliens)	C++20	Compilation error	0 ms	0 KiB

aliens

#include "aliens.h"
#include <bits/stdc++.h>
using namespace std;

long long take_photos(int cant, int m, int k, vector<int> r, vector<int> c) {
    vector<vector<int>> grid (r.size() , vector <int>(c.size()));
    int n = r.size() , m = c.size();
    for(int i = 0; i < r.size(); i++){
        for(int j = 0; j < c.size(); j++){
            grid[r[i]][c[i]]++;
        }
    }
    for(int i = 0; i < r.size(); i++){
        for(int j = 0; j < c.size(); j++){
            grid[r[i]][c[i]]++;
        }
    }
    int ans = 0;
    for(int i = 0; i < n; i++){
        int act = 0;
        for(int j = 0; j < m; j++){
            if(grid[i][j] > 0) act = max(act , j);
        }
        if(ans != -1)ans += abs((i+1)-(act+1)) * abs((i+1)-(act+1));
    }
    return ans;
}

Compilation message (stderr)

aliens.cpp: In function 'long long int take_photos(int, int, int, std::vector<int>, std::vector<int>)':
aliens.cpp:7:24: error: declaration of 'int m' shadows a parameter
    7 |     int n = r.size() , m = c.size();
      |                        ^
aliens.cpp:5:37: note: 'int m' previously declared here
    5 | long long take_photos(int cant, int m, int k, vector<int> r, vector<int> c) {
      |                                 ~~~~^
aliens.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
aliens_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~