Submission #879463

#	Time	Username	Problem	Language	Result	Execution time	Memory
879463		amin_2008	Poi (IOI09_poi)	C++17	100 / 100	197 ms	16212 KiB

poi

#pragma GCC optimize ("O3")
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>

// author: amin_2008

#define ios          ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define ll           long long
#define vi           vector<int>
#define vs           vector<string>
#define vc           vector<char>
#define vl           vector<ll>
#define all(v)       v.begin(), v.end()
#define rall(v)      v.rbegin(), v.rend()
#define pb           push_back
#define bpc          __builtin_popcount
#define pii          pair<int, int>
#define pll          pair<ll, ll>
#define piii         pair<pii, int>
#define vpii         vector<pii>
#define vpll         vector<pll>
#define vvpii        vector<vpii>
#define vvi          vector<vector<int>>
#define vvl          vector<vector<ll>>
#define ins          insert
#define ts           to_string
#define F            first
#define S            second
#define lb           lower_bound
#define ub           upper_bound
#define ld           long double
#define ull          unsigned long long
#define endl         '\n'
//#define int          ll

using namespace std;
using namespace __gnu_pbds;
using namespace __cxx11;
template<class T> using ordered_set = tree<T, null_type,less<T>, rb_tree_tag,tree_order_statistics_node_update>;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int inf = 1e9;
const int mod = 1e9+7;
const int sz = 2005;
const int N = 100005;
const int logg = 18;
const int P = 40000005;
const int M = 5e5+5;

int a[sz];

struct var
{
    int point = 0;
    int solved = 0;
    int in = 0;
};

bool cmp(var a, var b)
{
    if ( a.point == b.point and a.solved == b.solved )    return a.in < b.in;
    else if ( a.point == b.point )                        return a.solved > b.solved;
                                                          return a.point > b.point;
}

void solve()
{
    int n, t, p;
    cin >> n >> t >> p;
    vvi mat(n + 1, vi (t + 1));
    for(int i = 1; i <= n; i++)
        for(int j = 1; j <= t; j++)
            cin >> mat[i][j];
    vi points(t + 1);
    for(int i = 1; i <= t; i++)
        for(int j = 1; j <= n; j++)
            points[i] += ( !mat[j][i] );
    vector<var> v(n);
    for(int i = 1; i <= n; i++)
    {
        for(int j = 1; j <= t; j++)
        {
            if (mat[i][j])
                v[i-1].point += points[j],
                v[i-1].solved += ( mat[i][j] );
        }
        v[i-1].in = i;
    }
    sort(all(v), cmp);
    for(int i = 0; i < n; i++)
    {
        if (v[i].in == p)
        {
            cout << v[i].point << ' ' << i + 1 << endl;
            return;
        }
    }
}

signed main()
{
    ios;
    //precompute();
    int t = 1;
    //cin >> t;
    while(t--){
        solve();
    }
}

Compilation message (stderr)

poi.cpp: In function 'bool cmp(var, var)':
poi.cpp:66:10: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   66 |     else if ( a.point == b.point )                        return a.solved > b.solved;
      |          ^~
poi.cpp:67:59: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   67 |                                                           return a.point > b.point;
      |                                                           ^~~~~~

• Subtask 1: 100 / 100