Compilare: user.cpp: In function ‘void solve()’: user.cpp:98:27: warning: narrowing conversion of ‘box.std::pair<int, int>::first’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] q[e++] = {box.first, box.second, i}; ^ user.cpp:98:38: warning: narrowing conversion of ‘box.std::pair<int, int>::second’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] q[e++] = {box.first, box.second, i}; ^ user.cpp:98:20: warning: narrowing conversion of ‘i’ from ‘int’ to ‘char’ inside { } [-Wnarrowing] q[e++] = {box.first, box.second, i}; ^ user.cpp:109:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(dp[lin][col][dir] == 0) ^ user.cpp:110:24: warning: narrowing conversion of ‘lin’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] q[e++] = {lin, col, dir}; ^ user.cpp:110:24: warning: narrowing conversion of ‘col’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:111:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] dp[lin][col][dir] = 1; ^ user.cpp:118:28: warning: narrowing conversion of ‘l’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] q[e++] = {l, c, i}; ^ user.cpp:118:28: warning: narrowing conversion of ‘c’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:118:28: warning: narrowing conversion of ‘i’ from ‘int’ to ‘char’ inside { } [-Wnarrowing] user.cpp: In function ‘int main()’: user.cpp:130:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d " ,&t); ^ user.cpp:137:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d %d " ,&n,&m); ^ user.cpp:139:40: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(mat[i] + 1, MAXN, fi); ^