Compilare: user.cpp: In function ‘void add_sum(int, int)’: user.cpp:35:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<kush[list].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:68:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<kush[i].size(); ++j) ^ user.cpp:44:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pariuri.in", "rt", stdin); ^ user.cpp:45:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pariuri.out", "wt", stdout); ^ user.cpp:47:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:51:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &m); ^ user.cpp:54:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &t, &s); ^