Go: package main

import (
        "fmt"
)

const MAX_N = 31
var lines [MAX_N]int

func main() {
        var n, w int
        fmt.Scanf("%d", &n)
        fmt.Scanf("%d", &w)

        Init()
        var l, r int
        for {
                _, err := fmt.Scanf("%d,%d", &l, &r)
                if err != nil {
                        break
                }

                Swp(l, r)
        }

        for i := 1; i <= n; i++ {
                fmt.Printf("%d\n", lines[i])
        }
}

func Swp(l int, r int) {
        var s int
        s = lines[l]
        lines[l] = lines[r]
        lines[r] = s
}

func Init() {
        for i := 0; i < MAX_N; i++ {
                lines[i] = i
        }
}

C++: /*
C++ ???????????????????????????????????¬??????
??????AOJ-ITP1??????????????????
*/
#define _USE_MATH_DEFINES

#include <iostream> // ?¨??????\??????
#include <fstream>  // ??????????????\??????
#include <string>   // ???????????¢???
#include <vector>   // ???????????????
#include <cmath>    // ??°??????
#include <iomanip>  // stream???????????¢???
#include <algorithm>// max??¢??°??????

using std::cin;
using std::cout;
using std::endl;
using std::string;
using std::vector;        // ????´???°????????????????????????
using std::fixed;         // ???????????????????¨???????????????????????????????
using std::setprecision;  // ?????°????°???°?????\???????????°????????????????????¨????????\???

void out1(vector<int> a) {
	for (size_t i = 0; i < a.size(); i++)
	{
		cout << a[i] << " ";
	}
	cout << endl;
}

int main() {
	int w, n;
	cin >> w;	// ???????????°
	cin >> n;	// ?¨?????????°
	vector<int> begin(n);
	vector<int> end(n);
	vector<int> location(w);
	int num1 = 0;
	int num2 = 0;

	// ??\???
	for (size_t i = 0; i < n; i++)
	{
		scanf_s("%d,%d", &begin[i], &end[i]);
		cout << begin[i] << end[i] << endl;
	}

	// location????????????
	for (size_t i = 0; i < w; i++)
	{
		location[i] = i + 1;
		
	}
	
	// ????????\??¬????????§????????????
	for (size_t i = 0; i < w; i++)
	{
		vector<int> tmp(w,0);
		out1(tmp);
		tmp[i] = location[i];
		cout << "----i = " << i << "?????¨???----" << endl;
		for (size_t j = 0; j < n; j++)
		{
			if (begin[j] == location[i])
			{
				
				cout << begin[j] << "???" << end[j] << "?????\???????????????" << endl;
				location[i] = end[j];
			}
			else if (end[j] == location[i])
			{
				cout << end[j] << "???" << begin[j] << "?????\???????????????" << endl;
				location[i] = begin[j];
			}
			out1(location);
		}
	}
	// ???????????????
	vector<int> output(w,0);
	for (size_t i = 0; i < w; i++)
	{
		output[location[i]-1] = i;
	}

	// ???????????¨???????????????????????°??????1????¶????
	for (size_t i = 0; i < w; i++)
	{
		cout << output[i]+1 << endl;
	}


	return 0;
}

C++: #include <iostream>
#include <cmath>
#include <vector>
#include <algorithm>
using namespace std;
std::vector<int> change (std::vector<int> v,int i, int j) {
	int tmp = v[i-1];
	v[i-1] = v[j-1];
	v[j-1] = tmp;
	return v;
}
int main () {
	int w,n;
	cin >> w >> n;
	std::vector<int> num(w);
	for(int i = 0; i < w; i++){
		num[i] = i+1;
	}
	for(int i = 0; i < n; i++){
		int a,b;
		scanf("%d,%d",&a,&b);
		num = change(num,a,b);
	}
	for(int i = 0; i < w; i++) {
		cout << num[i]<< endl;
	}
}

C++: #include<iostream>
#include<algorithm>
#include<cstdio>
using namespace std;

int main(){
	int a[30];
	int b[30];
	int n,m;

	int c[30];
	for(int i = 0; i < 30; i++){
		c[i] = i + 1;
	}
	cin  >> n >> m;
	for(int i = 0; i < m; i++){
		scanf("%d,%d", &a[i], &b[i]);
	}


	for(int i = 0; i < m; i++){
		swap(c[a[i] - 1], c[b[i] - 1]);
	}

	for(int i = 0; i < n; i++){
		cout << c[i] << endl;
	}



}

C++: #include <iostream>
#include <string>
using namespace std;

int main(){
	const int MAX_w = 30;
	int w, n, a, b, c, p;
	int lots[MAX_w + 1];
	string str;
	
	for(int i = 1; i <= MAX_w; i++){
		lots[i] = i;
	}
	
	cin >> w >> n;
	
	for(int i = 0; i < n; i++){
		a = 0; b = 0;
		cin >> str;
		
		p = 0;
		while(str[p] != ','){
			a = a * 10 + (str[p] - 48);
			p++;
		}
		p++;
		while(p < str.size()){
			b = b * 10 + (str[p] - 48);
			p++;
		}
		
		c = lots[a];
		lots[a] = lots[b];
		lots[b] = c;
	}
	
	for(int i = 1; i <= w; i++){
		cout << lots[i] << endl;
	}
	
	return 0;
}

C++: #include <iostream>
#include <vector>
using namespace std;
int main() {
  int w, n;
  while (cin >> w >> n) {
    vector<int> vec;
    for (int i = 0; i < w; ++i) {
      vec.push_back(i + 1);
    }
    for (int i = 0; i < n; ++i) {
      int a, b;
      scanf("%d,%d", &a, &b);
      a -= 1;
      b -= 1;
      int tmp = vec[a];
      vec[a] = vec[b];
      vec[b] = tmp;
    }
    for (int i = 0; i < vec.size(); ++i) {
      cout << vec[i] << endl;
    }
  }
  return 0;
}

C++: #include <cstdio>
#include <iostream>
#include <algorhythm>
using namespace std;

int main()
{
  int w,n;
  int c[]={0};
  int a,b;
  //  int temp;

  scanf("%d",&w);
  scanf("%d",&n);

  for(int i=0; i<=n; i++){
    c[i]=i;
  }

  for(int i=0; i<n; i++){
    scanf("%d,%d", &a,&b);
    swap(c[a], c[b]);
  }

  for(int i=1; i<=w; i++){
    printf("%d\n",c[i]);
  }
}

C++: 
w = input()
n = input()
k = []
for i in range(w+1):
    k.append(i)
for i in range(n):
    l = raw_input()
    a = int(l[0])
    b = int(l[2])
    temp = k[a]
    k[a] = k[b]
    k[b] = temp

for i in range(w):
    print k[i+1]

C++: #include <iostream>
#include <algorithm>
#include <cstdio>
using namespace std;

int main(){
  int a,b,m[31],c,e;
  string d;
  cin >>a>>b;
  for(int i=1;i<=a;i++)m[i]=i;
  for(int i=1;i<=b;i++){
    cin >>d;
    swap(m[d[0]-'0'],m[d[2]-'0']);
  }
  for(int i=1;i<=a;i++)cout<<m[i]<<endl;
  return 0;
}

C++: #include <cstdio>
 #include <algorithm>
 
 int main(){
 	int array[50];
 	int w,n,a,b;
 
 	for(int i=0 ; i<50 ; i++){
 		array[i] = i;
 	}
 	
 	scanf("%d", &w);
 	scanf("%d", &n);
 	for(int i=0 ; i<n ; i++){
 		scanf("%d,%d", &a, &b);
 		swap( array[a] , array[b] );
 	}
 	for(int i=1 ; i<=w ; i++){
 		printf("%d\n", array[i]);
 	}
 }

C++: #include <stdio.h>

int main()
{
int p[31]={0};
int w,n,a,b;
int tmp;
tmp=0;
scanf("%d",&w);scanf("%d",&n);
for(int i=0;i<w;i++)
p[i]=i+1;
for(int i=0;i<n;i++)
{
scanf("%d",&a);scanf("%d",&b);
tmp=p[a-1];p[a-1]=p[b-1];p[b-1]=tmp;

}

for(int i=0;i<w;i++)
printf("%d\n",p[i]);

return 0;
}

C++: #include <iostream>

using namespace std;

int main(void){
	int w, n, i, j, m[30][30], a, b, l;
	scanf("%d%d",&w,&n);
	for(i = 0;i < n;i++){
		for(j = 0;j < w;j++){
			m[i][j] = j;
		}
	}
	for(i = 0;i < n;i++){
		scanf("%d%*c%d",&a,&b);
		m[i][b - 1] = a - 1;
		m[i][a - 1] = b - 1;
	}
	for(i = 0;i < w;i++){
		l = i;
		for(j = n - 1;j >= 0;j--){
			l = m[j][l];
		}
		printf("%d\n",l + 1);
	}
	return 0;
}

C++: #include <iostream>
#include <string>
using namespace std;

int main() {
	int w, n, x, y;
	string str;
	cin >> w >> n;
	int a[31];
	for (int i = 0; i <= w; i++) {
		a[i] = i;
	}
	for (int i = 0; i < n; i++) {
		cin >> str;
		x = str[0] - 48;
		y = str[2] - 48;
		int tmp = a[x];
		a[x] = a[y];
		a[y] = tmp;
	}
	for (int i = 1; i <= w; i++) {
		cout << a[i] << endl;
	}
	return 0;
}

C++: #include<iostream>
#include<cstdio>
using namespace std;
int w,n,num[31];
int main(){
    int a,b;
    cin>>w>>n;
    for(int i=0;i<w;i++)num[i]=i+1;
    for(int i=0;i<n;i++){
        scanf("%d,%d",&a,&b);
        swap(num[a-1],num[b-1]);
    }
    for(int i=0;i<w;i++)cout<<num[i]<<endl;
    return 0;
}