Compilare: user.cpp: In function ‘void read()’: user.cpp:22:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=n;i++) ^~~ user.cpp:28:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ int y,z; ^~~ user.cpp:50:13: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(int j=1;j<=a[i][0];j++) fr1[a[i][j]]--; sol--; } ^~~ user.cpp:50:57: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ for(int j=1;j<=a[i][0];j++) fr1[a[i][j]]--; sol--; } ^~~