Submission #1045954

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
10459542024-08-06 08:43:13dead0neBridges (APIO19_bridges)C++17
0 / 100
873 ms13540 KiB
#pragma GCC optimize("unroll-loops,Ofast,O3")
#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define spc << " " <<
#define endl "\n"
#define all(x) x.begin(), x.end()
#define int long long
#define ii pair<long long,int>
#define vi vector<int>
#define vii vector<ii>
#define st first
#define nd second
#define inf 1e15
#define MOD 1000000007
#define MX 50005
using namespace std;
const int B=1000;
int sz[MX], cmp[MX];
stack<int> hist;
int find(int x){
if(cmp[x]==x) return x;
return find(cmp[x]);
}
void unite(int x, int y){
x=find(x), y=find(y);
if(x==y)return;
if(sz[x]>sz[y]) swap(x,y);
 
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Compilation message (stderr)

bridges.cpp: In function 'void rollback(long long int)':
bridges.cpp:36:22: warning: comparison of integer expressions of different signedness: 'std::stack<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   36 |     while(hist.size()>x){
      |           ~~~~~~~~~~~^~
bridges.cpp: In function 'void solve()':
bridges.cpp:85:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |             while(ptr<unchanged.size() && w[unchanged[ptr]]>=y[i]){
      |                   ~~~^~~~~~~~~~~~~~~~~
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