Compilare: main.cpp: In function 'int main()': main.cpp:57:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (g[i].size()%2) ^~ main.cpp:58:23: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' ok=false; break; ^~~~~ main.cpp:62:4: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:67:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' return 0; ^~~~~~ main.cpp:45:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("ciclueuler.in", "r",stdin ); ^ main.cpp:46:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("ciclueuler.out", "w", stdout); ^ main.cpp:48:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &n,&m); ^ main.cpp:50:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &x, &y); ^