Compilare: main.cpp: In function 'int main()': main.cpp:108:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(;j<v[tp].size();j++) ~^~~~~~~~~~~~~ main.cpp:119:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j==v[tp].size()) ~^~~~~~~~~~~~~~ main.cpp:75:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ninjago.in","r",stdin); ^ main.cpp:76:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("ninjago.out","w",stdout); ^ main.cpp:77:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&p); ^ main.cpp:78:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ main.cpp:85:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %s",&j,&k,c); ^