Compilare: user.cpp: In function ‘bool exists(int)’: user.cpp:58:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((it -> currentConfig) == conf) return true; ^ user.cpp: In function ‘void updateG(str)’: user.cpp:73:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((it -> currentConfig) == conf) *it = nou; ^ user.cpp: In function ‘str strOf(int)’: user.cpp:81:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((it -> currentConfig) == conf) return *it; ^ user.cpp: In function ‘int main()’: user.cpp:92:13: warning: unused variable ‘conf’ [-Wunused-variable] int conf,q; ^ user.cpp:121:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (lastSTR.cost <= newCost) continue; ^ user.cpp:123:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (newCost < bestBombingCost) ^ user.cpp:133:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (newCost < bestBombingCost) ^ user.cpp:144:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (ct.currentConfig != initConfig) ^ user.cpp: In function ‘str strOf(int)’: user.cpp:83:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:87:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("boom.in","r",stdin); ^ user.cpp:88:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("boom.out","w",stdout); ^ user.cpp:89:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ user.cpp:93:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&bombs[i].cost,&q); ^ user.cpp:97:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ct); ^