Submission #420396

#	Time	Username	Problem	Language	Result	Execution time	Memory
420396		idk321	Comparing Plants (IOI20_plants)	C++17	5 / 100	93 ms	8668 KiB

plants

#include "plants.h"

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

int k;
vector<int> r;
vector<int> prefR;
int n;
int getSum(int from, int to)
{
    int res = prefR[to + 1];
    res -= prefR[from];
    return res;
}

void init(int K, std::vector<int> R) {
    k = K;
    r = R;
    n = r.size();
    prefR.resize(r.size() + 1);
    for (int i = 1; i <= r.size(); i++)
    {
        prefR[i] = r[i - 1];
        prefR[i] += prefR[i - 1];
    }
	return;
}

int compare_plants(int x, int y) {
    if (k == 2)
    {
        if (getSum(x, y - 1) == (y - x)) return -1;
        if (getSum(x, y - 1) == 0) return 1;
        int sum1 = getSum(y, n -1);
        if (x != 0) sum1 += getSum(0, x - 1);
        if (sum1 == (n - y) + x) return 1;
        if (sum1 == 0) return -1;
        return 0;
    }
	return 0;
}

Compilation message (stderr)

plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:22:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for (int i = 1; i <= r.size(); i++)
      |                     ~~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 14
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 11
• Subtask 6: 0 / 15
• Subtask 7: 0 / 25