Compilare: main.cpp: In function 'void add(int, int)': main.cpp:24:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<s[curr].sub.size(); i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void ad(int)': main.cpp:38:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<s[curr].sub.size(); i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void rez()': main.cpp:156:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j<s[i].sub.size(); j++) ~^~~~~~~~~~~~~~~~ main.cpp:169:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j<s[i].sub.size(); j++) ~^~~~~~~~~~~~~~~~ main.cpp:179:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j<s[i].sub.size(); j++) ~^~~~~~~~~~~~~~~~ main.cpp:137:9: warning: variable 'x' set but not used [-Wunused-but-set-variable] int x = 0; ^ main.cpp:56:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ main.cpp:60:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &a[i]); ^