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View Compilation Error

0_0_19073408_19475.cpp:84:5: error: redefinition of 'int n'
 int n,s;
     ^
0_0_19073408_19475.cpp:8:5: note: 'int n' previously declared here
 int n,s;
     ^
0_0_19073408_19475.cpp:84:7: error: redefinition of 'int s'
 int n,s;
       ^
0_0_19073408_19475.cpp:8:7: note: 'int s' previously declared here
 int n,s;
       ^
0_0_19073408_19475.cpp:85:18: error: redefinition of 'std::vector<int> g [505]'
 vector<int> g[505];
                  ^
0_0_19073408_19475.cpp:9:13: note: 'std::vector<int> g [505]' previously declared here
 vector<int> g[505];
             ^
0_0_19073408_19475.cpp:86:14: error: redefinition of 'int match [505]'
 int match[505];
              ^
0_0_19073408_19475.cpp:10:5: note: 'int match [505]' previously declared here
 int match[505];
     ^
0_0_19073408_19475.cpp:87:12: error: redefinition of 'int vis [505]'
 int vis[505];
            ^
0_0_19073408_19475.cpp:11:5: note: 'int vis [505]' previously declared here
 int vis[505];
     ^
0_0_19073408_19475.cpp: In function 'void add(int, int)':
0_0_19073408_19475.cpp:89:6: error: redefinition of 'void add(int, int)'
 void add(int u,int v){
      ^
0_0_19073408_19475.cpp:13:6: note: 'void add(int, int)' previously defined here
 void add(int u,int v){
      ^
0_0_19073408_19475.cpp: In function 'bool dfs(int)':
0_0_19073408_19475.cpp:94:6: error: redefinition of 'bool dfs(int)'
 bool dfs(int u){
      ^
0_0_19073408_19475.cpp:18:6: note: 'bool dfs(int)' previously defined here
 bool dfs(int u){
      ^
0_0_19073408_19475.cpp: In function 'int bi_match()':
0_0_19073408_19475.cpp:107:5: error: redefinition of 'int bi_match()'
 int bi_match(){
     ^
0_0_19073408_19475.cpp:31:5: note: 'int bi_match()' previously defined here
 int bi_match(){
     ^
0_0_19073408_19475.cpp: In function 'int main()':
0_0_19073408_19475.cpp:120:5: error: redefinition of 'int main()'
 int main(){
     ^
0_0_19073408_19475.cpp:44:5: note: 'int main()' previously defined here
 int main(){
     ^


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