0_0_26515135_10062.cpp: In member function 'void Mat::gauss()':
0_0_26515135_10062.cpp:25:52: error: 'fabs' was not declared in this scope
for(int k=i+1; k<n; ++k)if(fabs(a[k][i])>fabs(a[r][i]))r=k;
^
0_0_26515135_10062.cpp:26:64: error: 'swap' was not declared in this scope
if(r!=i)for(int j=i; j<=n; ++j)swap(a[i][j],a[r][j]);
^
0_0_26515135_10062.cpp: In member function 'void AC::dfs(int, int)':
0_0_26515135_10062.cpp:73:54: error: 'printf' was not declared in this scope
for(int j=dep<<1; j; j>>=1)printf(" ");
^
0_0_26515135_10062.cpp:74:32: error: 'printf' was not declared in this scope
printf("%d\n",i);
^
0_0_26515135_10062.cpp: In member function 'void AC::getfail()':
0_0_26515135_10062.cpp:80:9: error: 'queue' was not declared in this scope
queue<int> q;
^
0_0_26515135_10062.cpp:80:15: error: expected primary-expression before 'int'
queue<int> q;
^
0_0_26515135_10062.cpp:87:17: error: 'q' was not declared in this scope
q.push(nxt[root][i]);
^
0_0_26515135_10062.cpp:90:16: error: 'q' was not declared in this scope
while(!q.empty())
^
0_0_26515135_10062.cpp: In function 'int main()':
0_0_26515135_10062.cpp:1:36: error: 'stdin' was not declared in this scope
#define FRER() freopen("i.txt","r",stdin)
^
0_0_26515135_10062.cpp:124:5: note: in expansion of macro 'FRER'
FRER();
^
0_0_26515135_10062.cpp:1:41: error: 'freopen' was not declared in this scope
#define FRER() freopen("i.txt","r",stdin)
^
0_0_26515135_10062.cpp:124:5: note: in expansion of macro 'FRER'
FRER();
^
0_0_26515135_10062.cpp:125:25: error: 'stdout' was not declared in this scope
freopen("o.txt","w",stdout);
^
0_0_26515135_10062.cpp:127:18: error: 'scanf' was not declared in this scope
scanf("%d",&T);
^
0_0_26515135_10062.cpp:143:40: error: 'printf' was not declared in this scope
printf("%.2lf ",G[i][j]);
^
0_0_26515135_10062.cpp:144:24: error: 'printf' was not declared in this scope
printf("\n");
^
0_0_26515135_10062.cpp:150:38: error: 'printf' was not declared in this scope
printf("%lf ",G[i][j]);
^
0_0_26515135_10062.cpp:151:24: error: 'printf' was not declared in this scope
printf("\n");
^
0_0_26515135_10062.cpp:155:51: error: 'printf' was not declared in this scope
for(int i=0; i<n; ++i)printf("%lf ",ans[i]);
^
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