Submission #569622

#	Time	Username	Problem	Language	Result	Execution time	Memory
569622		stasico	Poi (IOI09_poi)	C++14	100 / 100	333 ms	22864 KiB

poi

#include <vector>
#include <cassert>
#include <algorithm>
#include <cstdio>
#include <iostream>
using namespace std;
#define MAX_N 2000
#define MAX_T 2000

 vector<int> solved[MAX_N];
 int points[MAX_T];
 int score[MAX_N];

bool poiLess(int x, int y)
{
  if (score[x]>score[y]) return true;
    else if (score[x] == score[y])
    {

        if (solved[x].size() > solved[y].size())
         return true;
        else if (solved[x].size() == solved[y].size())

            return x < y;
        else
            return false;
    }
    else
        return false;
}

int main()
{
    int n, t, p;
    scanf("%d %d %d", &n, &t, &p);
    assert(1 <= n && n <= MAX_N);
    assert(1 <= t && t <= MAX_T);
    assert(1 <= p && p <= n);
    p--;
    for (int i = 0; i < n; i++)
    {
        solved[i].reserve(n);
        int x;
        for (int j = 0; j < t; j++)
        {
            scanf("%d", &x);
            if (x == 1)
                solved[i].push_back(j);
            else

                points[j]++;
        }
    }
    vector<int> sortedIds;
    sortedIds.reserve(n);
    for (int i = 0; i < n; i++)
    {
        score[i] = 0;
        for (unsigned int j = 0; j < solved[i].size(); j++)
            score[i] += points[solved[i][j]];
        sortedIds.push_back(i);
    }
    sort(sortedIds.begin(), sortedIds.end(), poiLess);
    for (int i = 0; i < n; i++)
        if (sortedIds[i] == p)
        {
            cout << score[p] << " " << (i + 1) << endl;
            return 0;
        }
    assert(false);
    return 0;
}

Compilation message (stderr)

poi.cpp: In function 'int main()':
poi.cpp:35:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |     scanf("%d %d %d", &n, &t, &p);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
poi.cpp:46:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |             scanf("%d", &x);
      |             ~~~~~^~~~~~~~~~

• Subtask 1: 100 / 100