Submission #1010288

#	Time	Username	Problem	Language	Result	Execution time	Memory
1010288		aaaaaarroz	Aliens (IOI16_aliens)	C++17	Compilation error	0 ms	0 KiB

aliens

#include "aliens.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pair<int,int> = pair<int, int>;   
ll take_photos(int n, int m, int k, vector<int> r, vector<int> c) {
    vector<pair<int,int>> P; P.push_back({ -1, -1 });
    for(int i=0; i<n; i++) {
        if(r[i] > c[i]) P.push_back({ c[i], r[i] });
        else P.push_back({ r[i], c[i] });
    }
    sort(P.begin(), P.end(), [&](pair<int,int> a, pair<int,int> b) {
        if(a.first == b.first) return a.second > b.second;
        return a.first < b.first;
    });
    vector<pair<int,int>> P2; P2.push_back(P[0]); P2.push_back(P[1]);
    for(int i=2; i<=n; i++) {
        if(P[i].first <= P2.back().second && P[i].second <= P2.back().second) continue;
        P2.push_back(P[i]);
    }
    P = P2;
    n = P.size() - 1;
    ll dp[n+1][k+1];
    for(int i=0; i<=n; i++)
        for(int j=0; j<=k; j++) dp[i][j] = 1e9;
    dp[0][0] = 0;
    for(int i=1; i<=n; i++) {
        for(int j=1; j<=k; j++) {
            for(int x=i; x>=1; x--) {
                dp[i][j] = min(dp[i][j], dp[x-1][j-1] + (P[i].second - P[x].first + 1) * (P[i].second - P[x].first + 1) - max(0, (P[x-1].second - P[x].first + 1)) * max(0, (P[x-1].second - P[x].first + 1)) );
            }
        }
    }
    return *min_element(dp[n], dp[n]+k+1);
}

Compilation message (stderr)

aliens.cpp:5:7: error: expected nested-name-specifier
    5 | using pair<int,int> = pair<int, int>;
      |       ^~~~~~~~~~~~~