Submission #587514

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
587514	2022-07-02 04:07:36	benson1029	Sorting (IOI15_sorting)	C++14	Compilation error	0 ms	0 KiB

sorting

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#include "sorting.h"
#include<bits/stdc++.h>
using namespace std;
int a[200005], b[200005], s[200005];
void swapa(int x, int y) {
  b[a[x]] = y;
  b[a[y]] = x;
  if(st.find(x)==st.end() && st.find(y)!=st.end()) {
    st.erase(y);
    st.insert(x);
  }
  else if(st.find(x)!=st.end() && st.find(y)==st.end()) {
    st.erase(x);
    st.insert(y);
  }
  swap(a[x], a[y]);
}
vector< pair<int,int> > v;
set<int> st;
int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
  int l = 0, r = N, mid;
  while(l <= r) {
    mid = (l+r)/2;
    
    for(int i=0; i<N; i++) {
 
 
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Compilation message (stderr)

sorting.cpp: In function 'void swapa(int, int)':
sorting.cpp:10:5: error: 'st' was not declared in this scope; did you mean 's'?
   10 |  if(st.find(x)==st.end() && st.find(y)!=st.end()) {
      |     ^~
      |     s
sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:59:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |    for(int i=0; i<v.size(); i++) P[i] = v[i].first, Q[i] = v[i].second;
      |                 ~^~~~~~~~~
sorting.cpp:60:17: warning: conversion from 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   60 |    return v.size();
      |           ~~~~~~^~
sorting.cpp:55:4: warning: label 'end' defined but not used [-Wunused-label]
   55 |    end:;
      |    ^~~
sorting.cpp:24:39: warning: unused parameter 'M' [-Wunused-parameter]
   24 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                   ~~~~^
sorting.cpp:71:1: warning: control reaches end of non-void function [-Wreturn-type]
   71 | }
      | ^