Compilare: main.cpp: In function 'int main()': main.cpp:47:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=deque1[y].size();i++) ~^~~~~~~~~~~~~~~~~~ main.cpp:57:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=deque1[y].size()+1;i++) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:67:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=deque1[z].size()+1;i++) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:88:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=deque1[y].size();i++) ~^~~~~~~~~~~~~~~~~~ main.cpp:102:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=deque1[y].size();i++) ~^~~~~~~~~~~~~~~~~~ main.cpp:22:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&m,&n); ^ main.cpp:25:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&x,&y); ^