Compilare: main.cpp: In function 'int main()': main.cpp:46:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(it+1>=l[i].size()) ~~~~^~~~~~~~~~~~~ main.cpp:54:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(it+1>=l[i].size()) ~~~~^~~~~~~~~~~~~ main.cpp:22:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&M,&N); ^ main.cpp:25:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&life); ^ main.cpp:28:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&anu); ^ main.cpp:67:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&querry); ^