Submission #669973

#	Time	Username	Problem	Language	Result	Execution time	Memory
669973		dozer	The Potion of Great Power (CEOI20_potion)	C++14	38 / 100	1318 ms	262144 KiB

potion

#include <bits/stdc++.h>
using namespace std;
#define fileio() freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define pb push_back
#define sp " "
//#define endl "\n"
#define pii pair<int, int>
#define st first
#define nd second
#define LOGN 18

vector<pair<vector<int>, int>> curr[100005];
int arr[100005], n;

void init(int N, int D, int H[]) {
    n = N;
    for (int i = 0; i < N; i++)
        arr[i] = H[i];
}

void curseChanges(int U, int A[], int B[]) {
    for (int i = 0; i < U; i++)
    {
        int a = A[i], b = B[i];
        vector<int> x, y;
        int flag = 0;
        if (!curr[a].empty())
        {
            for (auto j : curr[a].back().st)
            {
                if (j == b) flag = 1;
                else x.pb(j);
            }
        }
        if (flag == 0) x.pb(b);
        if (!curr[b].empty())
        {
            for (auto j : curr[b].back().st)
            {
                if (j == a) flag = 1;
                else y.pb(j);
            }
        }
        if (flag == 0) y.pb(a);
        curr[a].pb({x, i});
        curr[b].pb({y, i});
    }
}

int question(int x, int y, int v) {
    int a = 0, b = 0;
    if (curr[x].empty() || curr[y].empty()) return 1e9;
    for (int i = LOGN; i >= 0; i--)
    {
        int tmp1 = a + (1<<i), tmp2 = b + (1<<i);
        if (tmp1 < curr[x].size() && curr[x][tmp1].nd < v) a = tmp1;
        if (tmp2 < curr[y].size() && curr[y][tmp2].nd < v) b = tmp2;
    }
    if (curr[x][a].nd >= v || curr[y][b].nd >= v) return 1e9;
    int i = 0, j = 0;
    int ans = 1e9;
    vector<int> k, l;
    for (auto i : curr[x][a].st) k.pb(arr[i]);
    for (auto i : curr[y][b].st) l.pb(arr[i]);
    sort(k.begin(), k.end());
    sort(l.begin(), l.end());
    while(i < k.size() && j < l.size())
    {
        ans = min(ans, abs(k[i] - l[j]));
        if (k[i] < l[j]) i++;
        else j++;
    }
    return ans;
}

Compilation message (stderr)

potion.cpp: In function 'int question(int, int, int)':
potion.cpp:57:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::vector<int>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |         if (tmp1 < curr[x].size() && curr[x][tmp1].nd < v) a = tmp1;
      |             ~~~~~^~~~~~~~~~~~~~~~
potion.cpp:58:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::vector<int>, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |         if (tmp2 < curr[y].size() && curr[y][tmp2].nd < v) b = tmp2;
      |             ~~~~~^~~~~~~~~~~~~~~~
potion.cpp:68:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |     while(i < k.size() && j < l.size())
      |           ~~^~~~~~~~~~
potion.cpp:68:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |     while(i < k.size() && j < l.size())
      |                           ~~^~~~~~~~~~

• Subtask 1: 0 / 0
• Subtask 2: 17 / 17
• Subtask 3: 0 / 14
• Subtask 4: 0 / 18
• Subtask 5: 21 / 21
• Subtask 6: 0 / 30