Compilare: main.cpp: In function 'int main()': main.cpp:43:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<s[k[i]].size();j++) ~^~~~~~~~~~~~~~~ main.cpp:51:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<s[x].size();j++) ~^~~~~~~~~~~~ main.cpp:53:10: warning: variable 's1' set but not used [-Wunused-but-set-variable] dd s1=s[x][j]; ^~ main.cpp:59:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<s[x].size();j++) ~^~~~~~~~~~~~ main.cpp:77:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<s[x].size();j++) ~^~~~~~~~~~~~ main.cpp:79:10: warning: variable 's1' set but not used [-Wunused-but-set-variable] dd s1=s[x][j]; ^~ main.cpp:20:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sarpe2.in","r",stdin); ^ main.cpp:21:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sarpe2.out","w",stdout); ^ main.cpp:24:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp:25:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=m;i++){scanf("%d",&k[i]);mp[k[i]]=i;} ^ main.cpp:30:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&nr); ^