#include <bits/stdc++.h> using namespace std; #define int long long #define square(x) ((x)*(x)) int take_photo(int &n, int &m, int &k, vector<int> &r, vector<int> &c){ vector<pair<int, int>> ori(n); // 0-base for (int i=0; i<n; i++) ori[i] = {min(r[i], c[i]), max(r[i], c[i])}; sort(ori.begin(), ori.end()); vector<pair<int, int>> stars{}; // 0-base for (int i=0; i<n; i++){ if (stars.empty()) stars.push_back(ori[i]); else if (stars.back().first==ori[i].first) stars.pop_back(); else if (stars.back().second < ori[i].second) stars.push_back(ori[i]); } n = stars.size(); vector<vector<int>> dp(k, vector<int>(n)); for (int i=0; i<k; i++){ for (int j=0; j<n; j++){ if (j<i) dp[i][j] = 0; else if (i==0){ dp[i][j] = square(stars[j].second-stars[0].first+1); }else{ dp[i][j] = m*m; for (int h=i+1; h<=j; h++){ int area = square(stars[j].second-stars[h].first+1); int over = (h>1) ? square(max(0LL, (stars[h-1].second-stars[h].first+1))) : 0; dp[i][j] = min(dp[i][j], dp[i-1][h-1]+area-over); } } } } return dp[k-1][n-1]; } signed main(){ int n, m, k; cin>>n>>m>>k; vector<int> r(n), c(n); for (int i=0; i<n; i++) cin>>r[i]>>c[i]; cout<<take_photo(n, m, k, r, c)<<'\n'; }

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
      |         ^~~~
/usr/bin/ld: /tmp/ccPklbxn.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccssEEWF.o:aliens.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccPklbxn.o: in function `main':
grader.cpp:(.text.startup+0xff): undefined reference to `take_photos(int, int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status