Compilare: user.cpp: In function ‘void bfs()’: user.cpp:19:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<mat[x].size();i++) ^ user.cpp: In function ‘void reconst()’: user.cpp:31:31: warning: operation on ‘poz’ may be undefined [-Wsequence-point] drum[++poz]=viz[drum[poz-1]]; ^ user.cpp: In function ‘int main()’: user.cpp:39:31: warning: conversion lacks type at end of format [-Wformat=] scanf("%D%D%D%D", &n,&m,&S,&D); ^ user.cpp:39:31: warning: conversion lacks type at end of format [-Wformat=] user.cpp:39:31: warning: conversion lacks type at end of format [-Wformat=] user.cpp:39:31: warning: conversion lacks type at end of format [-Wformat=] user.cpp:39:31: warning: too many arguments for format [-Wformat-extra-args]