Submission #1073492

#	Time	Username	Problem	Language	Result	Execution time	Memory
1073492		blushingecchigirl	Comparing Plants (IOI20_plants)	C++17	0 / 100	0 ms	348 KiB

plants

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back

vector<pair<pair<int, int>, pair<int, int>>> p;

void init(int k, std::vector<int> r) {
    int n = r.size(), x;
    p.resize(n);
    for(int i = 0; i<n; i++) {
        if(r[i]!=r[(i+1)%n]) {
            x = i;
            break;
        }
    }
    int cur = 0, g = 0;

    for(int i = x; i<n+x; i++) {
        p[i%n].second.first = cur;
        if(r[i%n]) cur--;
        else cur++;
        p[i%n].second.second = cur;
        p[i%n].first.first = p[(i+1)%n].first.second = g;
        if(r[i%n] != r[(i+1)%n]) g++;
    }
    return;
}
int compare_plants(int x, int y) {
    auto a = p[x].first, b = p[y].first;
    if(a.first == b.second) {
        if(p[x].second.first>p[y].second.second) return 1;
        return -1;
    } if(a.second == b.first) {
        if(p[x].second.second>p[y].second.first) return 1;
        return -1;
    }
    return 0;
}

Compilation message (stderr)

plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:19:23: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
   19 |     for(int i = x; i<n+x; i++) {
      |                      ~^~

• Subtask 1: 0 / 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