Submission #206040

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
2060402020-03-02 03:21:31SegtreeSorting (IOI15_sorting)C++14
20 / 100
7 ms376 KiB
#include"sorting.h"
#include<iostream>
#include<algorithm>
#include<vector>
#include<queue>
using namespace std;
typedef long long ll;
#define chmin(a,b) a=min(a,b)
#define chmax(a,b) a=max(a,b)
#define all(x) x,begin(),x.end()
#define rep(i,n) for(int i=0;i<n;i++)
#define mod 1000000007
#define mad(a,b) a=(a+b)%mod
int findSwapPairs(int N,int S[],int M,int X[],int Y[],int P[],int Q[]){
int R=0;
for(int i=0;i<N;i++){
ll p;
for(int j=0;j<N;j++)if(S[j]==i)p=j;
if(i!=p){
P[R]=i,Q[R]=p;
if(P[R]>Q[R])swap(P[R],Q[R]);
R++;
swap(S[i],S[p]);
}
}
//rep(i,R)cout<<"PQ:"<<P[i]<<" "<<Q[i]<<endl;
return R;
}
/*
int main(){
 
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Compilation message (stderr)

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:20:16: warning: conversion to 'int' from 'll {aka long long int}' may alter its value [-Wconversion]
    P[R]=i,Q[R]=p;
                ^
sorting.cpp:14:37: warning: unused parameter 'M' [-Wunused-parameter]
 int findSwapPairs(int N,int S[],int M,int X[],int Y[],int P[],int Q[]){
                                     ^
sorting.cpp:14:45: warning: unused parameter 'X' [-Wunused-parameter]
 int findSwapPairs(int N,int S[],int M,int X[],int Y[],int P[],int Q[]){
                                             ^
sorting.cpp:14:53: warning: unused parameter 'Y' [-Wunused-parameter]
 int findSwapPairs(int N,int S[],int M,int X[],int Y[],int P[],int Q[]){
                                                     ^
sorting.cpp:19:3: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if(i!=p){
   ^~
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